Finding the Fourth Proportional to 1,928.64, 2,877.82 and 1,811.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.64 : 2,877.82 = 1,811.10 : x
2. Step 2: Convert to fraction form
   1,928.64/2,877.82 = 1,811.10/x
3. Step 3: Cross multiply
   1,928.64x = 2,877.82 × 1,811.10
4. Step 4: Simplify right side
   1,928.64x = 5,212,019.80
5. Step 5: Solve for x
   x = 5,212,019.80/1,928.64
6. Step 6: Final answer
   x = 2,702.43