Finding the Fourth Proportional to 1,532.72, 2,114.98 and 869.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,532.72 : 2,114.98 = 869.40 : x
2. Step 2: Convert to fraction form
   1,532.72/2,114.98 = 869.40/x
3. Step 3: Cross multiply
   1,532.72x = 2,114.98 × 869.40
4. Step 4: Simplify right side
   1,532.72x = 1,838,763.61
5. Step 5: Solve for x
   x = 1,838,763.61/1,532.72
6. Step 6: Final answer
   x = 1,199.67