Finding the Fourth Proportional to 1,078.29, 1,618.29 and 753.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.29 : 1,618.29 = 753.93 : x
2. Step 2: Convert to fraction form
   1,078.29/1,618.29 = 753.93/x
3. Step 3: Cross multiply
   1,078.29x = 1,618.29 × 753.93
4. Step 4: Simplify right side
   1,078.29x = 1,220,077.38
5. Step 5: Solve for x
   x = 1,220,077.38/1,078.29
6. Step 6: Final answer
   x = 1,131.49