Finding the Fourth Proportional to 1,553.50, 2,144.91 and 1,088.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553.50 : 2,144.91 = 1,088.38 : x
2. Step 2: Convert to fraction form
   1,553.50/2,144.91 = 1,088.38/x
3. Step 3: Cross multiply
   1,553.50x = 2,144.91 × 1,088.38
4. Step 4: Simplify right side
   1,553.50x = 2,334,477.15
5. Step 5: Solve for x
   x = 2,334,477.15/1,553.50
6. Step 6: Final answer
   x = 1,502.72