Finding the Fourth Proportional to 1,521.16, 2,098.50 and 931.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.16 : 2,098.50 = 931.48 : x
2. Step 2: Convert to fraction form
   1,521.16/2,098.50 = 931.48/x
3. Step 3: Cross multiply
   1,521.16x = 2,098.50 × 931.48
4. Step 4: Simplify right side
   1,521.16x = 1,954,710.78
5. Step 5: Solve for x
   x = 1,954,710.78/1,521.16
6. Step 6: Final answer
   x = 1,285.01