Finding the Fourth Proportional to 1,142.22, 1,713.52 and 753.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.22 : 1,713.52 = 753.02 : x
2. Step 2: Convert to fraction form
   1,142.22/1,713.52 = 753.02/x
3. Step 3: Cross multiply
   1,142.22x = 1,713.52 × 753.02
4. Step 4: Simplify right side
   1,142.22x = 1,290,314.83
5. Step 5: Solve for x
   x = 1,290,314.83/1,142.22
6. Step 6: Final answer
   x = 1,129.66