Finding the Fourth Proportional to 1,880.76, 2,817.50 and 1,445.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,880.76 : 2,817.50 = 1,445.79 : x
2. Step 2: Convert to fraction form
   1,880.76/2,817.50 = 1,445.79/x
3. Step 3: Cross multiply
   1,880.76x = 2,817.50 × 1,445.79
4. Step 4: Simplify right side
   1,880.76x = 4,073,506.10
5. Step 5: Solve for x
   x = 4,073,506.10/1,880.76
6. Step 6: Final answer
   x = 2,165.88