Finding the Fourth Proportional to 1,088.89, 1,633.42 and 540.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.89 : 1,633.42 = 540.52 : x
2. Step 2: Convert to fraction form
   1,088.89/1,633.42 = 540.52/x
3. Step 3: Cross multiply
   1,088.89x = 1,633.42 × 540.52
4. Step 4: Simplify right side
   1,088.89x = 882,896.18
5. Step 5: Solve for x
   x = 882,896.18/1,088.89
6. Step 6: Final answer
   x = 810.82