Finding the Fourth Proportional to 1,009,629.89, 1,393,440.05 and 647,462.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,629.89 : 1,393,440.05 = 647,462.69 : x
2. Step 2: Convert to fraction form
   1,009,629.89/1,393,440.05 = 647,462.69/x
3. Step 3: Cross multiply
   1,009,629.89x = 1,393,440.05 × 647,462.69
4. Step 4: Simplify right side
   1,009,629.89x = 902,200,443,126.74
5. Step 5: Solve for x
   x = 902,200,443,126.74/1,009,629.89
6. Step 6: Final answer
   x = 893,595.22