Finding the Fourth Proportional to 1,412.50, 1,948.80 and 915.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.50 : 1,948.80 = 915.52 : x
2. Step 2: Convert to fraction form
   1,412.50/1,948.80 = 915.52/x
3. Step 3: Cross multiply
   1,412.50x = 1,948.80 × 915.52
4. Step 4: Simplify right side
   1,412.50x = 1,784,165.38
5. Step 5: Solve for x
   x = 1,784,165.38/1,412.50
6. Step 6: Final answer
   x = 1,263.13