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Finding the Fourth Proportional to 2,281.02, 3,420.90 and 637.74

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Solution

The fourth proportional to 2,281.02, 3,420.90 and 637.74 is: 956.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.02 : 3,420.90 = 637.74 : x
  2. Step 2: Convert to fraction form
    2,281.02/3,420.90 = 637.74/x
  3. Step 3: Cross multiply
    2,281.02x = 3,420.90 × 637.74
  4. Step 4: Simplify right side
    2,281.02x = 2,181,644.77
  5. Step 5: Solve for x
    x = 2,181,644.77/2,281.02
  6. Step 6: Final answer
    x = 956.43

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