Finding the Fourth Proportional to 758,870.93, 1,047,200.77 and 419,317.31

Step by Step Solution

1. Step 1: Write the proportion equation
   758,870.93 : 1,047,200.77 = 419,317.31 : x
2. Step 2: Convert to fraction form
   758,870.93/1,047,200.77 = 419,317.31/x
3. Step 3: Cross multiply
   758,870.93x = 1,047,200.77 × 419,317.31
4. Step 4: Simplify right side
   758,870.93x = 439,109,413,048.48
5. Step 5: Solve for x
   x = 439,109,413,048.48/758,870.93
6. Step 6: Final answer
   x = 578,635.17