Finding the Fourth Proportional to 740,978.05, 1,022,173.50 and 468,587.20

Step by Step Solution

1. Step 1: Write the proportion equation
   740,978.05 : 1,022,173.50 = 468,587.20 : x
2. Step 2: Convert to fraction form
   740,978.05/1,022,173.50 = 468,587.20/x
3. Step 3: Cross multiply
   740,978.05x = 1,022,173.50 × 468,587.20
4. Step 4: Simplify right side
   740,978.05x = 478,977,418,279.20
5. Step 5: Solve for x
   x = 478,977,418,279.20/740,978.05
6. Step 6: Final answer
   x = 646,412.43