Finding the Fourth Proportional to 2,145,216.39, 2,959,665.35 and 1,227,111.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,216.39 : 2,959,665.35 = 1,227,111.05 : x
2. Step 2: Convert to fraction form
   2,145,216.39/2,959,665.35 = 1,227,111.05/x
3. Step 3: Cross multiply
   2,145,216.39x = 2,959,665.35 × 1,227,111.05
4. Step 4: Simplify right side
   2,145,216.39x = 3,631,838,034,353.24
5. Step 5: Solve for x
   x = 3,631,838,034,353.24/2,145,216.39
6. Step 6: Final answer
   x = 1,692,993.79