Finding the Fourth Proportional to 4,069.71, 6,105.51 and 1,147.91

Step by Step Solution

1. Step 1: Write the proportion equation
   4,069.71 : 6,105.51 = 1,147.91 : x
2. Step 2: Convert to fraction form
   4,069.71/6,105.51 = 1,147.91/x
3. Step 3: Cross multiply
   4,069.71x = 6,105.51 × 1,147.91
4. Step 4: Simplify right side
   4,069.71x = 7,008,545.46
5. Step 5: Solve for x
   x = 7,008,545.46/4,069.71
6. Step 6: Final answer
   x = 1,722.12