Finding the Fourth Proportional to 2,607.61, 3,912.69 and 1,146.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.61 : 3,912.69 = 1,146.58 : x
2. Step 2: Convert to fraction form
   2,607.61/3,912.69 = 1,146.58/x
3. Step 3: Cross multiply
   2,607.61x = 3,912.69 × 1,146.58
4. Step 4: Simplify right side
   2,607.61x = 4,486,212.10
5. Step 5: Solve for x
   x = 4,486,212.10/2,607.61
6. Step 6: Final answer
   x = 1,720.43