Finding the Fourth Proportional to 1,913.72, 2,868.96 and 758.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913.72 : 2,868.96 = 758.84 : x
2. Step 2: Convert to fraction form
   1,913.72/2,868.96 = 758.84/x
3. Step 3: Cross multiply
   1,913.72x = 2,868.96 × 758.84
4. Step 4: Simplify right side
   1,913.72x = 2,177,081.61
5. Step 5: Solve for x
   x = 2,177,081.61/1,913.72
6. Step 6: Final answer
   x = 1,137.62