Finding the Fourth Proportional to 1,531.25, 2,113.52 and 934.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,531.25 : 2,113.52 = 934.15 : x
2. Step 2: Convert to fraction form
   1,531.25/2,113.52 = 934.15/x
3. Step 3: Cross multiply
   1,531.25x = 2,113.52 × 934.15
4. Step 4: Simplify right side
   1,531.25x = 1,974,344.71
5. Step 5: Solve for x
   x = 1,974,344.71/1,531.25
6. Step 6: Final answer
   x = 1,289.37