Finding the Fourth Proportional to 2,611.29, 3,915.38 and 1,224.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.29 : 3,915.38 = 1,224.93 : x
2. Step 2: Convert to fraction form
   2,611.29/3,915.38 = 1,224.93/x
3. Step 3: Cross multiply
   2,611.29x = 3,915.38 × 1,224.93
4. Step 4: Simplify right side
   2,611.29x = 4,796,077.28
5. Step 5: Solve for x
   x = 4,796,077.28/2,611.29
6. Step 6: Final answer
   x = 1,836.67