Finding the Fourth Proportional to 1,807.56, 2,493.72 and 1,107.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.56 : 2,493.72 = 1,107.72 : x
2. Step 2: Convert to fraction form
   1,807.56/2,493.72 = 1,107.72/x
3. Step 3: Cross multiply
   1,807.56x = 2,493.72 × 1,107.72
4. Step 4: Simplify right side
   1,807.56x = 2,762,343.52
5. Step 5: Solve for x
   x = 2,762,343.52/1,807.56
6. Step 6: Final answer
   x = 1,528.22