Finding the Fourth Proportional to 1,442,915.31, 1,990,739.59 and 831,055.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442,915.31 : 1,990,739.59 = 831,055.82 : x
2. Step 2: Convert to fraction form
   1,442,915.31/1,990,739.59 = 831,055.82/x
3. Step 3: Cross multiply
   1,442,915.31x = 1,990,739.59 × 831,055.82
4. Step 4: Simplify right side
   1,442,915.31x = 1,654,415,725,273.12
5. Step 5: Solve for x
   x = 1,654,415,725,273.12/1,442,915.31
6. Step 6: Final answer
   x = 1,146,578.54