Finding the Fourth Proportional to 2,738.61, 3,781.00 and 1,899.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.61 : 3,781.00 = 1,899.05 : x
2. Step 2: Convert to fraction form
   2,738.61/3,781.00 = 1,899.05/x
3. Step 3: Cross multiply
   2,738.61x = 3,781.00 × 1,899.05
4. Step 4: Simplify right side
   2,738.61x = 7,180,296.86
5. Step 5: Solve for x
   x = 7,180,296.86/2,738.61
6. Step 6: Final answer
   x = 2,621.88