Finding the Fourth Proportional to 2,611.36, 3,915.28 and 1,377.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.36 : 3,915.28 = 1,377.46 : x
2. Step 2: Convert to fraction form
   2,611.36/3,915.28 = 1,377.46/x
3. Step 3: Cross multiply
   2,611.36x = 3,915.28 × 1,377.46
4. Step 4: Simplify right side
   2,611.36x = 5,393,141.59
5. Step 5: Solve for x
   x = 5,393,141.59/2,611.36
6. Step 6: Final answer
   x = 2,065.26