Finding the Fourth Proportional to 1,204,429.05, 1,662,107.31 and 660,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,204,429.05 : 1,662,107.31 = 660,550.50 : x
2. Step 2: Convert to fraction form
   1,204,429.05/1,662,107.31 = 660,550.50/x
3. Step 3: Cross multiply
   1,204,429.05x = 1,662,107.31 × 660,550.50
4. Step 4: Simplify right side
   1,204,429.05x = 1,097,905,814,674.16
5. Step 5: Solve for x
   x = 1,097,905,814,674.16/1,204,429.05
6. Step 6: Final answer
   x = 911,557.07