Finding the Fourth Proportional to 1,385,269.43, 2,078,111.91 and 486,552.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385,269.43 : 2,078,111.91 = 486,552.77 : x
2. Step 2: Convert to fraction form
   1,385,269.43/2,078,111.91 = 486,552.77/x
3. Step 3: Cross multiply
   1,385,269.43x = 2,078,111.91 × 486,552.77
4. Step 4: Simplify right side
   1,385,269.43x = 1,011,111,095,789.93
5. Step 5: Solve for x
   x = 1,011,111,095,789.93/1,385,269.43
6. Step 6: Final answer
   x = 729,902.12