Finding the Fourth Proportional to 1,131.32, 1,694.93 and 515.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.32 : 1,694.93 = 515.54 : x
2. Step 2: Convert to fraction form
   1,131.32/1,694.93 = 515.54/x
3. Step 3: Cross multiply
   1,131.32x = 1,694.93 × 515.54
4. Step 4: Simplify right side
   1,131.32x = 873,801.10
5. Step 5: Solve for x
   x = 873,801.10/1,131.32
6. Step 6: Final answer
   x = 772.38