Finding the Fourth Proportional to 1,085.80, 1,499.14 and 713.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.80 : 1,499.14 = 713.42 : x
2. Step 2: Convert to fraction form
   1,085.80/1,499.14 = 713.42/x
3. Step 3: Cross multiply
   1,085.80x = 1,499.14 × 713.42
4. Step 4: Simplify right side
   1,085.80x = 1,069,516.46
5. Step 5: Solve for x
   x = 1,069,516.46/1,085.80
6. Step 6: Final answer
   x = 985.00