Finding the Fourth Proportional to 1,615,543.88, 2,229,359.52 and 890,389.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615,543.88 : 2,229,359.52 = 890,389.34 : x
2. Step 2: Convert to fraction form
   1,615,543.88/2,229,359.52 = 890,389.34/x
3. Step 3: Cross multiply
   1,615,543.88x = 2,229,359.52 × 890,389.34
4. Step 4: Simplify right side
   1,615,543.88x = 1,984,997,951,635.52
5. Step 5: Solve for x
   x = 1,984,997,951,635.52/1,615,543.88
6. Step 6: Final answer
   x = 1,228,687.12