Finding the Fourth Proportional to 2,978.17, 4,465.74 and 1,003.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.17 : 4,465.74 = 1,003.12 : x
2. Step 2: Convert to fraction form
   2,978.17/4,465.74 = 1,003.12/x
3. Step 3: Cross multiply
   2,978.17x = 4,465.74 × 1,003.12
4. Step 4: Simplify right side
   2,978.17x = 4,479,673.11
5. Step 5: Solve for x
   x = 4,479,673.11/2,978.17
6. Step 6: Final answer
   x = 1,504.17