Finding the Fourth Proportional to 800,807.22, 1,105,004.70 and 478,448.82

Step by Step Solution

1. Step 1: Write the proportion equation
   800,807.22 : 1,105,004.70 = 478,448.82 : x
2. Step 2: Convert to fraction form
   800,807.22/1,105,004.70 = 478,448.82/x
3. Step 3: Cross multiply
   800,807.22x = 1,105,004.70 × 478,448.82
4. Step 4: Simplify right side
   800,807.22x = 528,688,194,809.45
5. Step 5: Solve for x
   x = 528,688,194,809.45/800,807.22
6. Step 6: Final answer
   x = 660,194.09