Finding the Fourth Proportional to 2,607.40, 3,911.42 and 1,146.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.40 : 3,911.42 = 1,146.92 : x
2. Step 2: Convert to fraction form
   2,607.40/3,911.42 = 1,146.92/x
3. Step 3: Cross multiply
   2,607.40x = 3,911.42 × 1,146.92
4. Step 4: Simplify right side
   2,607.40x = 4,486,085.83
5. Step 5: Solve for x
   x = 4,486,085.83/2,607.40
6. Step 6: Final answer
   x = 1,720.52