Finding the Fourth Proportional to 1,301,616.50, 1,952,459.31 and 415,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301,616.50 : 1,952,459.31 = 415,152.50 : x
2. Step 2: Convert to fraction form
   1,301,616.50/1,952,459.31 = 415,152.50/x
3. Step 3: Cross multiply
   1,301,616.50x = 1,952,459.31 × 415,152.50
4. Step 4: Simplify right side
   1,301,616.50x = 810,568,363,694.78
5. Step 5: Solve for x
   x = 810,568,363,694.78/1,301,616.50
6. Step 6: Final answer
   x = 622,739.77