Finding the Fourth Proportional to 1,557,144.93, 2,148,860.22 and 878,081.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,557,144.93 : 2,148,860.22 = 878,081.61 : x
2. Step 2: Convert to fraction form
   1,557,144.93/2,148,860.22 = 878,081.61/x
3. Step 3: Cross multiply
   1,557,144.93x = 2,148,860.22 × 878,081.61
4. Step 4: Simplify right side
   1,557,144.93x = 1,886,874,641,642.55
5. Step 5: Solve for x
   x = 1,886,874,641,642.55/1,557,144.93
6. Step 6: Final answer
   x = 1,211,752.74