Finding the Fourth Proportional to 1,562.80, 2,158.50 and 1,249.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.80 : 2,158.50 = 1,249.15 : x
2. Step 2: Convert to fraction form
   1,562.80/2,158.50 = 1,249.15/x
3. Step 3: Cross multiply
   1,562.80x = 2,158.50 × 1,249.15
4. Step 4: Simplify right side
   1,562.80x = 2,696,290.28
5. Step 5: Solve for x
   x = 2,696,290.28/1,562.80
6. Step 6: Final answer
   x = 1,725.29