Finding the Fourth Proportional to 1,865.72, 2,799.24 and 1,865.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.72 : 2,799.24 = 1,865.72 : x
2. Step 2: Convert to fraction form
   1,865.72/2,799.24 = 1,865.72/x
3. Step 3: Cross multiply
   1,865.72x = 2,799.24 × 1,865.72
4. Step 4: Simplify right side
   1,865.72x = 5,222,598.05
5. Step 5: Solve for x
   x = 5,222,598.05/1,865.72
6. Step 6: Final answer
   x = 2,799.24