Finding the Fourth Proportional to 452,870.12, 678,419.40 and 373,022.72

Step by Step Solution

1. Step 1: Write the proportion equation
   452,870.12 : 678,419.40 = 373,022.72 : x
2. Step 2: Convert to fraction form
   452,870.12/678,419.40 = 373,022.72/x
3. Step 3: Cross multiply
   452,870.12x = 678,419.40 × 373,022.72
4. Step 4: Simplify right side
   452,870.12x = 253,065,849,888.77
5. Step 5: Solve for x
   x = 253,065,849,888.77/452,870.12
6. Step 6: Final answer
   x = 558,804.48