Finding the Fourth Proportional to 2,611.45, 3,916.63 and 1,224.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.45 : 3,916.63 = 1,224.42 : x
2. Step 2: Convert to fraction form
   2,611.45/3,916.63 = 1,224.42/x
3. Step 3: Cross multiply
   2,611.45x = 3,916.63 × 1,224.42
4. Step 4: Simplify right side
   2,611.45x = 4,795,600.10
5. Step 5: Solve for x
   x = 4,795,600.10/2,611.45
6. Step 6: Final answer
   x = 1,836.37