Finding the Fourth Proportional to 1,088.82, 1,501.82 and 715.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.82 : 1,501.82 = 715.68 : x
2. Step 2: Convert to fraction form
   1,088.82/1,501.82 = 715.68/x
3. Step 3: Cross multiply
   1,088.82x = 1,501.82 × 715.68
4. Step 4: Simplify right side
   1,088.82x = 1,074,822.71
5. Step 5: Solve for x
   x = 1,074,822.71/1,088.82
6. Step 6: Final answer
   x = 987.14