Finding the Fourth Proportional to 2,545.89, 3,820.79 and 1,140.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.89 : 3,820.79 = 1,140.74 : x
2. Step 2: Convert to fraction form
   2,545.89/3,820.79 = 1,140.74/x
3. Step 3: Cross multiply
   2,545.89x = 3,820.79 × 1,140.74
4. Step 4: Simplify right side
   2,545.89x = 4,358,527.98
5. Step 5: Solve for x
   x = 4,358,527.98/2,545.89
6. Step 6: Final answer
   x = 1,711.99