Finding the Fourth Proportional to 2,438,156.09, 3,657,474.71 and 840,508.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,438,156.09 : 3,657,474.71 = 840,508.85 : x
2. Step 2: Convert to fraction form
   2,438,156.09/3,657,474.71 = 840,508.85/x
3. Step 3: Cross multiply
   2,438,156.09x = 3,657,474.71 × 840,508.85
4. Step 4: Simplify right side
   2,438,156.09x = 3,074,139,870,499.23
5. Step 5: Solve for x
   x = 3,074,139,870,499.23/2,438,156.09
6. Step 6: Final answer
   x = 1,260,846.21