Finding the Fourth Proportional to 1,081.98, 1,492.74 and 886.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.98 : 1,492.74 = 886.32 : x
2. Step 2: Convert to fraction form
   1,081.98/1,492.74 = 886.32/x
3. Step 3: Cross multiply
   1,081.98x = 1,492.74 × 886.32
4. Step 4: Simplify right side
   1,081.98x = 1,323,045.32
5. Step 5: Solve for x
   x = 1,323,045.32/1,081.98
6. Step 6: Final answer
   x = 1,222.80