Finding the Fourth Proportional to 1,443,427.47, 1,992,078.18 and 831,603.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,427.47 : 1,992,078.18 = 831,603.28 : x
2. Step 2: Convert to fraction form
   1,443,427.47/1,992,078.18 = 831,603.28/x
3. Step 3: Cross multiply
   1,443,427.47x = 1,992,078.18 × 831,603.28
4. Step 4: Simplify right side
   1,443,427.47x = 1,656,618,748,504.43
5. Step 5: Solve for x
   x = 1,656,618,748,504.43/1,443,427.47
6. Step 6: Final answer
   x = 1,147,697.95