Finding the Fourth Proportional to 1,880.81, 2,821.89 and 1,002.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,880.81 : 2,821.89 = 1,002.39 : x
2. Step 2: Convert to fraction form
   1,880.81/2,821.89 = 1,002.39/x
3. Step 3: Cross multiply
   1,880.81x = 2,821.89 × 1,002.39
4. Step 4: Simplify right side
   1,880.81x = 2,828,627.49
5. Step 5: Solve for x
   x = 2,828,627.49/1,880.81
6. Step 6: Final answer
   x = 1,503.94