Finding the Fourth Proportional to 715,075.72, 986,697.54 and 409,103.50

Step by Step Solution

1. Step 1: Write the proportion equation
   715,075.72 : 986,697.54 = 409,103.50 : x
2. Step 2: Convert to fraction form
   715,075.72/986,697.54 = 409,103.50/x
3. Step 3: Cross multiply
   715,075.72x = 986,697.54 × 409,103.50
4. Step 4: Simplify right side
   715,075.72x = 403,661,417,055.39
5. Step 5: Solve for x
   x = 403,661,417,055.39/715,075.72
6. Step 6: Final answer
   x = 564,501.64