Finding the Fourth Proportional to 1,415.92, 1,953.57 and 1,116.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.92 : 1,953.57 = 1,116.24 : x
2. Step 2: Convert to fraction form
   1,415.92/1,953.57 = 1,116.24/x
3. Step 3: Cross multiply
   1,415.92x = 1,953.57 × 1,116.24
4. Step 4: Simplify right side
   1,415.92x = 2,180,652.98
5. Step 5: Solve for x
   x = 2,180,652.98/1,415.92
6. Step 6: Final answer
   x = 1,540.10