Finding the Fourth Proportional to 781,647.69, 1,171,870.75 and 397,080.37

Step by Step Solution

1. Step 1: Write the proportion equation
   781,647.69 : 1,171,870.75 = 397,080.37 : x
2. Step 2: Convert to fraction form
   781,647.69/1,171,870.75 = 397,080.37/x
3. Step 3: Cross multiply
   781,647.69x = 1,171,870.75 × 397,080.37
4. Step 4: Simplify right side
   781,647.69x = 465,326,871,002.18
5. Step 5: Solve for x
   x = 465,326,871,002.18/781,647.69
6. Step 6: Final answer
   x = 595,315.36