Finding the Fourth Proportional to 3,521.72, 5,282.71 and 1,671.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521.72 : 5,282.71 = 1,671.89 : x
2. Step 2: Convert to fraction form
   3,521.72/5,282.71 = 1,671.89/x
3. Step 3: Cross multiply
   3,521.72x = 5,282.71 × 1,671.89
4. Step 4: Simplify right side
   3,521.72x = 8,832,079.43
5. Step 5: Solve for x
   x = 8,832,079.43/3,521.72
6. Step 6: Final answer
   x = 2,507.89