Finding the Fourth Proportional to 1,443,426.47, 1,992,076.80 and 831,602.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,426.47 : 1,992,076.80 = 831,602.28 : x
2. Step 2: Convert to fraction form
   1,443,426.47/1,992,076.80 = 831,602.28/x
3. Step 3: Cross multiply
   1,443,426.47x = 1,992,076.80 × 831,602.28
4. Step 4: Simplify right side
   1,443,426.47x = 1,656,615,608,815.10
5. Step 5: Solve for x
   x = 1,656,615,608,815.10/1,443,426.47
6. Step 6: Final answer
   x = 1,147,696.57