Finding the Fourth Proportional to 2,072.64, 3,093.52 and 1,865.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.64 : 3,093.52 = 1,865.28 : x
2. Step 2: Convert to fraction form
   2,072.64/3,093.52 = 1,865.28/x
3. Step 3: Cross multiply
   2,072.64x = 3,093.52 × 1,865.28
4. Step 4: Simplify right side
   2,072.64x = 5,770,280.99
5. Step 5: Solve for x
   x = 5,770,280.99/2,072.64
6. Step 6: Final answer
   x = 2,784.02