Finding the Fourth Proportional to 728,870.52, 1,005,842.82 and 406,572.24

Step by Step Solution

1. Step 1: Write the proportion equation
   728,870.52 : 1,005,842.82 = 406,572.24 : x
2. Step 2: Convert to fraction form
   728,870.52/1,005,842.82 = 406,572.24/x
3. Step 3: Cross multiply
   728,870.52x = 1,005,842.82 × 406,572.24
4. Step 4: Simplify right side
   728,870.52x = 408,947,768,415.32
5. Step 5: Solve for x
   x = 408,947,768,415.32/728,870.52
6. Step 6: Final answer
   x = 561,070.53