Finding the Fourth Proportional to 2,861,223.67, 4,292,499.81 and 839,385.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861,223.67 : 4,292,499.81 = 839,385.91 : x
2. Step 2: Convert to fraction form
   2,861,223.67/4,292,499.81 = 839,385.91/x
3. Step 3: Cross multiply
   2,861,223.67x = 4,292,499.81 × 839,385.91
4. Step 4: Simplify right side
   2,861,223.67x = 3,603,063,859,191.68
5. Step 5: Solve for x
   x = 3,603,063,859,191.68/2,861,223.67
6. Step 6: Final answer
   x = 1,259,273.75