Finding the Fourth Proportional to 1,388.04, 1,915.41 and 758.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.04 : 1,915.41 = 758.44 : x
2. Step 2: Convert to fraction form
   1,388.04/1,915.41 = 758.44/x
3. Step 3: Cross multiply
   1,388.04x = 1,915.41 × 758.44
4. Step 4: Simplify right side
   1,388.04x = 1,452,718.77
5. Step 5: Solve for x
   x = 1,452,718.77/1,388.04
6. Step 6: Final answer
   x = 1,046.60