Finding the Fourth Proportional to 897,597.61, 1,239,499.63 and 668,071.05

Step by Step Solution

1. Step 1: Write the proportion equation
   897,597.61 : 1,239,499.63 = 668,071.05 : x
2. Step 2: Convert to fraction form
   897,597.61/1,239,499.63 = 668,071.05/x
3. Step 3: Cross multiply
   897,597.61x = 1,239,499.63 × 668,071.05
4. Step 4: Simplify right side
   897,597.61x = 828,073,819,288.71
5. Step 5: Solve for x
   x = 828,073,819,288.71/897,597.61
6. Step 6: Final answer
   x = 922,544.59