Finding the Fourth Proportional to 1,872.13, 2,805 and 1,049.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,872.13 : 2,805 = 1,049.89 : x
2. Step 2: Convert to fraction form
   1,872.13/2,805 = 1,049.89/x
3. Step 3: Cross multiply
   1,872.13x = 2,805 × 1,049.89
4. Step 4: Simplify right side
   1,872.13x = 2,944,941.45
5. Step 5: Solve for x
   x = 2,944,941.45/1,872.13
6. Step 6: Final answer
   x = 1,573.04