Finding the Fourth Proportional to 2,312.83, 3,191.93 and 1,265.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.83 : 3,191.93 = 1,265.05 : x
2. Step 2: Convert to fraction form
   2,312.83/3,191.93 = 1,265.05/x
3. Step 3: Cross multiply
   2,312.83x = 3,191.93 × 1,265.05
4. Step 4: Simplify right side
   2,312.83x = 4,037,951.05
5. Step 5: Solve for x
   x = 4,037,951.05/2,312.83
6. Step 6: Final answer
   x = 1,745.89