Finding the Fourth Proportional to 3,003.31, 4,503.76 and 1,247.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,003.31 : 4,503.76 = 1,247.12 : x
2. Step 2: Convert to fraction form
   3,003.31/4,503.76 = 1,247.12/x
3. Step 3: Cross multiply
   3,003.31x = 4,503.76 × 1,247.12
4. Step 4: Simplify right side
   3,003.31x = 5,616,720.42
5. Step 5: Solve for x
   x = 5,616,720.42/3,003.31
6. Step 6: Final answer
   x = 1,870.18