Finding the Fourth Proportional to 1,686.50, 2,326.32 and 1,088.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.50 : 2,326.32 = 1,088.76 : x
2. Step 2: Convert to fraction form
   1,686.50/2,326.32 = 1,088.76/x
3. Step 3: Cross multiply
   1,686.50x = 2,326.32 × 1,088.76
4. Step 4: Simplify right side
   1,686.50x = 2,532,798.72
5. Step 5: Solve for x
   x = 2,532,798.72/1,686.50
6. Step 6: Final answer
   x = 1,501.81