Finding the Fourth Proportional to 1,068.08, 1,474.72 and 713.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.08 : 1,474.72 = 713.92 : x
2. Step 2: Convert to fraction form
   1,068.08/1,474.72 = 713.92/x
3. Step 3: Cross multiply
   1,068.08x = 1,474.72 × 713.92
4. Step 4: Simplify right side
   1,068.08x = 1,052,832.10
5. Step 5: Solve for x
   x = 1,052,832.10/1,068.08
6. Step 6: Final answer
   x = 985.72