Finding the Fourth Proportional to 2,003.64, 2,990.63 and 1,880.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.64 : 2,990.63 = 1,880.52 : x
2. Step 2: Convert to fraction form
   2,003.64/2,990.63 = 1,880.52/x
3. Step 3: Cross multiply
   2,003.64x = 2,990.63 × 1,880.52
4. Step 4: Simplify right side
   2,003.64x = 5,623,939.53
5. Step 5: Solve for x
   x = 5,623,939.53/2,003.64
6. Step 6: Final answer
   x = 2,806.86