Finding the Fourth Proportional to 3,071.72, 4,238.98 and 1,674.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.72 : 4,238.98 = 1,674.47 : x
2. Step 2: Convert to fraction form
   3,071.72/4,238.98 = 1,674.47/x
3. Step 3: Cross multiply
   3,071.72x = 4,238.98 × 1,674.47
4. Step 4: Simplify right side
   3,071.72x = 7,098,060.67
5. Step 5: Solve for x
   x = 7,098,060.67/3,071.72
6. Step 6: Final answer
   x = 2,310.78