Finding the Fourth Proportional to 1,866.72, 2,798.82 and 1,045.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866.72 : 2,798.82 = 1,045.56 : x
2. Step 2: Convert to fraction form
   1,866.72/2,798.82 = 1,045.56/x
3. Step 3: Cross multiply
   1,866.72x = 2,798.82 × 1,045.56
4. Step 4: Simplify right side
   1,866.72x = 2,926,334.24
5. Step 5: Solve for x
   x = 2,926,334.24/1,866.72
6. Step 6: Final answer
   x = 1,567.63