Finding the Fourth Proportional to 1,521.91, 2,271.86 and 1,337.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.91 : 2,271.86 = 1,337.39 : x
2. Step 2: Convert to fraction form
   1,521.91/2,271.86 = 1,337.39/x
3. Step 3: Cross multiply
   1,521.91x = 2,271.86 × 1,337.39
4. Step 4: Simplify right side
   1,521.91x = 3,038,344.80
5. Step 5: Solve for x
   x = 3,038,344.80/1,521.91
6. Step 6: Final answer
   x = 1,996.40