Finding the Fourth Proportional to 3,114.59, 4,670.86 and 1,139.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,114.59 : 4,670.86 = 1,139.77 : x
2. Step 2: Convert to fraction form
   3,114.59/4,670.86 = 1,139.77/x
3. Step 3: Cross multiply
   3,114.59x = 4,670.86 × 1,139.77
4. Step 4: Simplify right side
   3,114.59x = 5,323,706.10
5. Step 5: Solve for x
   x = 5,323,706.10/3,114.59
6. Step 6: Final answer
   x = 1,709.28