Finding the Fourth Proportional to 1,616,086.74, 2,230,216.86 and 890,960.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616,086.74 : 2,230,216.86 = 890,960.40 : x
2. Step 2: Convert to fraction form
   1,616,086.74/2,230,216.86 = 890,960.40/x
3. Step 3: Cross multiply
   1,616,086.74x = 2,230,216.86 × 890,960.40
4. Step 4: Simplify right side
   1,616,086.74x = 1,987,034,905,672.34
5. Step 5: Solve for x
   x = 1,987,034,905,672.34/1,616,086.74
6. Step 6: Final answer
   x = 1,229,534.81