Finding the Fourth Proportional to 1,443,428.47, 1,992,079.56 and 831,604.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,428.47 : 1,992,079.56 = 831,604.28 : x
2. Step 2: Convert to fraction form
   1,443,428.47/1,992,079.56 = 831,604.28/x
3. Step 3: Cross multiply
   1,443,428.47x = 1,992,079.56 × 831,604.28
4. Step 4: Simplify right side
   1,443,428.47x = 1,656,621,888,196.52
5. Step 5: Solve for x
   x = 1,656,621,888,196.52/1,443,428.47
6. Step 6: Final answer
   x = 1,147,699.33