Finding the Fourth Proportional to 1,004.31, 1,385.95 and 562.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.31 : 1,385.95 = 562.32 : x
2. Step 2: Convert to fraction form
   1,004.31/1,385.95 = 562.32/x
3. Step 3: Cross multiply
   1,004.31x = 1,385.95 × 562.32
4. Step 4: Simplify right side
   1,004.31x = 779,339.07
5. Step 5: Solve for x
   x = 779,339.07/1,004.31
6. Step 6: Final answer
   x = 775.99