Finding the Fourth Proportional to 1,337.31, 2,004.98 and 515.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.31 : 2,004.98 = 515.34 : x
2. Step 2: Convert to fraction form
   1,337.31/2,004.98 = 515.34/x
3. Step 3: Cross multiply
   1,337.31x = 2,004.98 × 515.34
4. Step 4: Simplify right side
   1,337.31x = 1,033,243.82
5. Step 5: Solve for x
   x = 1,033,243.82/1,337.31
6. Step 6: Final answer
   x = 772.63