Finding the Fourth Proportional to 1,009,937.91, 1,392,453.72 and 646,764.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,937.91 : 1,392,453.72 = 646,764.69 : x
2. Step 2: Convert to fraction form
   1,009,937.91/1,392,453.72 = 646,764.69/x
3. Step 3: Cross multiply
   1,009,937.91x = 1,392,453.72 × 646,764.69
4. Step 4: Simplify right side
   1,009,937.91x = 900,589,898,555.15
5. Step 5: Solve for x
   x = 900,589,898,555.15/1,009,937.91
6. Step 6: Final answer
   x = 891,727.99