Finding the Fourth Proportional to 3,792.25, 5,686.72 and 1,916.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,792.25 : 5,686.72 = 1,916.99 : x
2. Step 2: Convert to fraction form
   3,792.25/5,686.72 = 1,916.99/x
3. Step 3: Cross multiply
   3,792.25x = 5,686.72 × 1,916.99
4. Step 4: Simplify right side
   3,792.25x = 10,901,385.37
5. Step 5: Solve for x
   x = 10,901,385.37/3,792.25
6. Step 6: Final answer
   x = 2,874.65