Finding the Fourth Proportional to 2,251.72, 3,107.56 and 1,307.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,251.72 : 3,107.56 = 1,307.84 : x
2. Step 2: Convert to fraction form
   2,251.72/3,107.56 = 1,307.84/x
3. Step 3: Cross multiply
   2,251.72x = 3,107.56 × 1,307.84
4. Step 4: Simplify right side
   2,251.72x = 4,064,191.27
5. Step 5: Solve for x
   x = 4,064,191.27/2,251.72
6. Step 6: Final answer
   x = 1,804.93