Finding the Fourth Proportional to 3,112.83, 4,670.87 and 1,265.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,112.83 : 4,670.87 = 1,265.31 : x
2. Step 2: Convert to fraction form
   3,112.83/4,670.87 = 1,265.31/x
3. Step 3: Cross multiply
   3,112.83x = 4,670.87 × 1,265.31
4. Step 4: Simplify right side
   3,112.83x = 5,910,092.19
5. Step 5: Solve for x
   x = 5,910,092.19/3,112.83
6. Step 6: Final answer
   x = 1,898.62