Finding the Fourth Proportional to 2,611.05, 3,916.37 and 1,224.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.05 : 3,916.37 = 1,224.03 : x
2. Step 2: Convert to fraction form
   2,611.05/3,916.37 = 1,224.03/x
3. Step 3: Cross multiply
   2,611.05x = 3,916.37 × 1,224.03
4. Step 4: Simplify right side
   2,611.05x = 4,793,748.25
5. Step 5: Solve for x
   x = 4,793,748.25/2,611.05
6. Step 6: Final answer
   x = 1,835.95