Finding the Fourth Proportional to 1,915.59, 2,872.62 and 744.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.59 : 2,872.62 = 744.94 : x
2. Step 2: Convert to fraction form
   1,915.59/2,872.62 = 744.94/x
3. Step 3: Cross multiply
   1,915.59x = 2,872.62 × 744.94
4. Step 4: Simplify right side
   1,915.59x = 2,139,911.46
5. Step 5: Solve for x
   x = 2,139,911.46/1,915.59
6. Step 6: Final answer
   x = 1,117.10