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Finding the Fourth Proportional to 1,719.04, 2,578.48 and 693.76

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Solution

The fourth proportional to 1,719.04, 2,578.48 and 693.76 is: 1,040.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.04 : 2,578.48 = 693.76 : x
  2. Step 2: Convert to fraction form
    1,719.04/2,578.48 = 693.76/x
  3. Step 3: Cross multiply
    1,719.04x = 2,578.48 × 693.76
  4. Step 4: Simplify right side
    1,719.04x = 1,788,846.28
  5. Step 5: Solve for x
    x = 1,788,846.28/1,719.04
  6. Step 6: Final answer
    x = 1,040.61

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