Finding the Fourth Proportional to 1,009,940.27, 1,392,456.96 and 646,767.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,940.27 : 1,392,456.96 = 646,767.05 : x
2. Step 2: Convert to fraction form
   1,009,940.27/1,392,456.96 = 646,767.05/x
3. Step 3: Cross multiply
   1,009,940.27x = 1,392,456.96 × 646,767.05
4. Step 4: Simplify right side
   1,009,940.27x = 900,595,273,308.88
5. Step 5: Solve for x
   x = 900,595,273,308.88/1,009,940.27
6. Step 6: Final answer
   x = 891,731.23