Finding the Fourth Proportional to 2,500.91, 3,451.03 and 1,381.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.91 : 3,451.03 = 1,381.76 : x
2. Step 2: Convert to fraction form
   2,500.91/3,451.03 = 1,381.76/x
3. Step 3: Cross multiply
   2,500.91x = 3,451.03 × 1,381.76
4. Step 4: Simplify right side
   2,500.91x = 4,768,495.21
5. Step 5: Solve for x
   x = 4,768,495.21/2,500.91
6. Step 6: Final answer
   x = 1,906.70