Finding the Fourth Proportional to 1,086.24, 1,499.28 and 1,034.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.24 : 1,499.28 = 1,034.16 : x
2. Step 2: Convert to fraction form
   1,086.24/1,499.28 = 1,034.16/x
3. Step 3: Cross multiply
   1,086.24x = 1,499.28 × 1,034.16
4. Step 4: Simplify right side
   1,086.24x = 1,550,495.40
5. Step 5: Solve for x
   x = 1,550,495.40/1,086.24
6. Step 6: Final answer
   x = 1,427.40