Finding the Fourth Proportional to 1,553.04, 2,142.72 and 1,087.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553.04 : 2,142.72 = 1,087.56 : x
2. Step 2: Convert to fraction form
   1,553.04/2,142.72 = 1,087.56/x
3. Step 3: Cross multiply
   1,553.04x = 2,142.72 × 1,087.56
4. Step 4: Simplify right side
   1,553.04x = 2,330,336.56
5. Step 5: Solve for x
   x = 2,330,336.56/1,553.04
6. Step 6: Final answer
   x = 1,500.50