Finding the Fourth Proportional to 1,478,047.50, 2,217,112.56 and 480,775.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478,047.50 : 2,217,112.56 = 480,775.50 : x
2. Step 2: Convert to fraction form
   1,478,047.50/2,217,112.56 = 480,775.50/x
3. Step 3: Cross multiply
   1,478,047.50x = 2,217,112.56 × 480,775.50
4. Step 4: Simplify right side
   1,478,047.50x = 1,065,933,399,590.28
5. Step 5: Solve for x
   x = 1,065,933,399,590.28/1,478,047.50
6. Step 6: Final answer
   x = 721,176.69