Finding the Fourth Proportional to 2,310.58, 3,188.82 and 1,262.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.58 : 3,188.82 = 1,262.80 : x
2. Step 2: Convert to fraction form
   2,310.58/3,188.82 = 1,262.80/x
3. Step 3: Cross multiply
   2,310.58x = 3,188.82 × 1,262.80
4. Step 4: Simplify right side
   2,310.58x = 4,026,841.90
5. Step 5: Solve for x
   x = 4,026,841.90/2,310.58
6. Step 6: Final answer
   x = 1,742.78