Finding the Fourth Proportional to 2,623.21, 3,931.23 and 1,451.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.21 : 3,931.23 = 1,451.47 : x
2. Step 2: Convert to fraction form
   2,623.21/3,931.23 = 1,451.47/x
3. Step 3: Cross multiply
   2,623.21x = 3,931.23 × 1,451.47
4. Step 4: Simplify right side
   2,623.21x = 5,706,062.41
5. Step 5: Solve for x
   x = 5,706,062.41/2,623.21
6. Step 6: Final answer
   x = 2,175.22