Finding the Fourth Proportional to 1,678,111.62, 2,315,773.14 and 914,148.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,111.62 : 2,315,773.14 = 914,148.78 : x
2. Step 2: Convert to fraction form
   1,678,111.62/2,315,773.14 = 914,148.78/x
3. Step 3: Cross multiply
   1,678,111.62x = 2,315,773.14 × 914,148.78
4. Step 4: Simplify right side
   1,678,111.62x = 2,116,961,190,687.77
5. Step 5: Solve for x
   x = 2,116,961,190,687.77/1,678,111.62
6. Step 6: Final answer
   x = 1,261,513.93