Finding the Fourth Proportional to 978,321.09, 1,350,276.72 and 634,583.01

Step by Step Solution

1. Step 1: Write the proportion equation
   978,321.09 : 1,350,276.72 = 634,583.01 : x
2. Step 2: Convert to fraction form
   978,321.09/1,350,276.72 = 634,583.01/x
3. Step 3: Cross multiply
   978,321.09x = 1,350,276.72 × 634,583.01
4. Step 4: Simplify right side
   978,321.09x = 856,862,665,310.53
5. Step 5: Solve for x
   x = 856,862,665,310.53/978,321.09
6. Step 6: Final answer
   x = 875,850.14