Finding the Fourth Proportional to 1,900.56, 2,640.89 and 1,880.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.56 : 2,640.89 = 1,880.28 : x
2. Step 2: Convert to fraction form
   1,900.56/2,640.89 = 1,880.28/x
3. Step 3: Cross multiply
   1,900.56x = 2,640.89 × 1,880.28
4. Step 4: Simplify right side
   1,900.56x = 4,965,603.25
5. Step 5: Solve for x
   x = 4,965,603.25/1,900.56
6. Step 6: Final answer
   x = 2,612.71