Finding the Fourth Proportional to 1,913.73, 2,870.55 and 758.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913.73 : 2,870.55 = 758.67 : x
2. Step 2: Convert to fraction form
   1,913.73/2,870.55 = 758.67/x
3. Step 3: Cross multiply
   1,913.73x = 2,870.55 × 758.67
4. Step 4: Simplify right side
   1,913.73x = 2,177,800.17
5. Step 5: Solve for x
   x = 2,177,800.17/1,913.73
6. Step 6: Final answer
   x = 1,137.99