Finding the Fourth Proportional to 1,880.59, 2,819.45 and 1,140.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,880.59 : 2,819.45 = 1,140.05 : x
2. Step 2: Convert to fraction form
   1,880.59/2,819.45 = 1,140.05/x
3. Step 3: Cross multiply
   1,880.59x = 2,819.45 × 1,140.05
4. Step 4: Simplify right side
   1,880.59x = 3,214,302.73
5. Step 5: Solve for x
   x = 3,214,302.73/1,880.59
6. Step 6: Final answer
   x = 1,709.20