Finding the Fourth Proportional to 1,080.93, 1,492.18 and 688.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.93 : 1,492.18 = 688.49 : x
2. Step 2: Convert to fraction form
   1,080.93/1,492.18 = 688.49/x
3. Step 3: Cross multiply
   1,080.93x = 1,492.18 × 688.49
4. Step 4: Simplify right side
   1,080.93x = 1,027,341.83
5. Step 5: Solve for x
   x = 1,027,341.83/1,080.93
6. Step 6: Final answer
   x = 950.42