Finding the Fourth Proportional to 2,606.18, 3,906.63 and 1,145.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.18 : 3,906.63 = 1,145.07 : x
2. Step 2: Convert to fraction form
   2,606.18/3,906.63 = 1,145.07/x
3. Step 3: Cross multiply
   2,606.18x = 3,906.63 × 1,145.07
4. Step 4: Simplify right side
   2,606.18x = 4,473,364.81
5. Step 5: Solve for x
   x = 4,473,364.81/2,606.18
6. Step 6: Final answer
   x = 1,716.45