Finding the Fourth Proportional to 1,641,978.76, 2,265,969.18 and 916,801.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641,978.76 : 2,265,969.18 = 916,801.96 : x
2. Step 2: Convert to fraction form
   1,641,978.76/2,265,969.18 = 916,801.96/x
3. Step 3: Cross multiply
   1,641,978.76x = 2,265,969.18 × 916,801.96
4. Step 4: Simplify right side
   1,641,978.76x = 2,077,444,985,523.59
5. Step 5: Solve for x
   x = 2,077,444,985,523.59/1,641,978.76
6. Step 6: Final answer
   x = 1,265,208.20