Finding the Fourth Proportional to 2,078,439.70, 3,117,011.55 and 816,654.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078,439.70 : 3,117,011.55 = 816,654.10 : x
2. Step 2: Convert to fraction form
   2,078,439.70/3,117,011.55 = 816,654.10/x
3. Step 3: Cross multiply
   2,078,439.70x = 3,117,011.55 × 816,654.10
4. Step 4: Simplify right side
   2,078,439.70x = 2,545,520,262,054.86
5. Step 5: Solve for x
   x = 2,545,520,262,054.86/2,078,439.70
6. Step 6: Final answer
   x = 1,224,726.54