Finding the Fourth Proportional to 672,074.10, 1,008,111.15 and 298,826.10

Step by Step Solution

1. Step 1: Write the proportion equation
   672,074.10 : 1,008,111.15 = 298,826.10 : x
2. Step 2: Convert to fraction form
   672,074.10/1,008,111.15 = 298,826.10/x
3. Step 3: Cross multiply
   672,074.10x = 1,008,111.15 × 298,826.10
4. Step 4: Simplify right side
   672,074.10x = 301,249,923,321.02
5. Step 5: Solve for x
   x = 301,249,923,321.02/672,074.10
6. Step 6: Final answer
   x = 448,239.15