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Finding the Fourth Proportional to 1,845.18, 2,768.78 and 612.97

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Solution

The fourth proportional to 1,845.18, 2,768.78 and 612.97 is: 919.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,845.18 : 2,768.78 = 612.97 : x
  2. Step 2: Convert to fraction form
    1,845.18/2,768.78 = 612.97/x
  3. Step 3: Cross multiply
    1,845.18x = 2,768.78 × 612.97
  4. Step 4: Simplify right side
    1,845.18x = 1,697,173.69
  5. Step 5: Solve for x
    x = 1,697,173.69/1,845.18
  6. Step 6: Final answer
    x = 919.79

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