Finding the Fourth Proportional to 2,611.42, 3,916.94 and 1,225.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.42 : 3,916.94 = 1,225.07 : x
2. Step 2: Convert to fraction form
   2,611.42/3,916.94 = 1,225.07/x
3. Step 3: Cross multiply
   2,611.42x = 3,916.94 × 1,225.07
4. Step 4: Simplify right side
   2,611.42x = 4,798,525.69
5. Step 5: Solve for x
   x = 4,798,525.69/2,611.42
6. Step 6: Final answer
   x = 1,837.52