Finding the Fourth Proportional to 1,099,116.10, 1,648,674.15 and 921,969.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099,116.10 : 1,648,674.15 = 921,969.10 : x
2. Step 2: Convert to fraction form
   1,099,116.10/1,648,674.15 = 921,969.10/x
3. Step 3: Cross multiply
   1,099,116.10x = 1,648,674.15 × 921,969.10
4. Step 4: Simplify right side
   1,099,116.10x = 1,520,026,622,268.77
5. Step 5: Solve for x
   x = 1,520,026,622,268.77/1,099,116.10
6. Step 6: Final answer
   x = 1,382,953.65