Finding the Fourth Proportional to 1,899.16, 2,849.46 and 745.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.16 : 2,849.46 = 745.72 : x
2. Step 2: Convert to fraction form
   1,899.16/2,849.46 = 745.72/x
3. Step 3: Cross multiply
   1,899.16x = 2,849.46 × 745.72
4. Step 4: Simplify right side
   1,899.16x = 2,124,899.31
5. Step 5: Solve for x
   x = 2,124,899.31/1,899.16
6. Step 6: Final answer
   x = 1,118.86