Finding the Fourth Proportional to 1,108,456.10, 1,660,351.35 and 921,832.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108,456.10 : 1,660,351.35 = 921,832.10 : x
2. Step 2: Convert to fraction form
   1,108,456.10/1,660,351.35 = 921,832.10/x
3. Step 3: Cross multiply
   1,108,456.10x = 1,660,351.35 × 921,832.10
4. Step 4: Simplify right side
   1,108,456.10x = 1,530,565,171,708.34
5. Step 5: Solve for x
   x = 1,530,565,171,708.34/1,108,456.10
6. Step 6: Final answer
   x = 1,380,808.11