Finding the Fourth Proportional to 1,426,908.54, 2,137,511.01 and 857,978.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426,908.54 : 2,137,511.01 = 857,978.10 : x
2. Step 2: Convert to fraction form
   1,426,908.54/2,137,511.01 = 857,978.10/x
3. Step 3: Cross multiply
   1,426,908.54x = 2,137,511.01 × 857,978.10
4. Step 4: Simplify right side
   1,426,908.54x = 1,833,937,635,088.88
5. Step 5: Solve for x
   x = 1,833,937,635,088.88/1,426,908.54
6. Step 6: Final answer
   x = 1,285,252.41