Finding the Fourth Proportional to 1,615,212.96, 2,229,008.83 and 890,086.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615,212.96 : 2,229,008.83 = 890,086.62 : x
2. Step 2: Convert to fraction form
   1,615,212.96/2,229,008.83 = 890,086.62/x
3. Step 3: Cross multiply
   1,615,212.96x = 2,229,008.83 × 890,086.62
4. Step 4: Simplify right side
   1,615,212.96x = 1,984,010,937,679.55
5. Step 5: Solve for x
   x = 1,984,010,937,679.55/1,615,212.96
6. Step 6: Final answer
   x = 1,228,327.78