Finding the Fourth Proportional to 3,648.42, 5,474.25 and 1,916.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,648.42 : 5,474.25 = 1,916.64 : x
2. Step 2: Convert to fraction form
   3,648.42/5,474.25 = 1,916.64/x
3. Step 3: Cross multiply
   3,648.42x = 5,474.25 × 1,916.64
4. Step 4: Simplify right side
   3,648.42x = 10,492,166.52
5. Step 5: Solve for x
   x = 10,492,166.52/3,648.42
6. Step 6: Final answer
   x = 2,875.81