Finding the Fourth Proportional to 2,640,816.59, 3,961,493.39 and 911,461.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640,816.59 : 3,961,493.39 = 911,461.32 : x
2. Step 2: Convert to fraction form
   2,640,816.59/3,961,493.39 = 911,461.32/x
3. Step 3: Cross multiply
   2,640,816.59x = 3,961,493.39 × 911,461.32
4. Step 4: Simplify right side
   2,640,816.59x = 3,610,747,996,699.33
5. Step 5: Solve for x
   x = 3,610,747,996,699.33/2,640,816.59
6. Step 6: Final answer
   x = 1,367,284.66