Finding the Fourth Proportional to 1,916.55, 2,872.89 and 745.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.55 : 2,872.89 = 745.83 : x
2. Step 2: Convert to fraction form
   1,916.55/2,872.89 = 745.83/x
3. Step 3: Cross multiply
   1,916.55x = 2,872.89 × 745.83
4. Step 4: Simplify right side
   1,916.55x = 2,142,687.55
5. Step 5: Solve for x
   x = 2,142,687.55/1,916.55
6. Step 6: Final answer
   x = 1,117.99