Finding the Fourth Proportional to 1,557,096.12, 2,148,866.28 and 878,018.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,557,096.12 : 2,148,866.28 = 878,018.04 : x
2. Step 2: Convert to fraction form
   1,557,096.12/2,148,866.28 = 878,018.04/x
3. Step 3: Cross multiply
   1,557,096.12x = 2,148,866.28 × 878,018.04
4. Step 4: Simplify right side
   1,557,096.12x = 1,886,743,359,387.69
5. Step 5: Solve for x
   x = 1,886,743,359,387.69/1,557,096.12
6. Step 6: Final answer
   x = 1,211,706.42