Finding the Fourth Proportional to 2,290.93, 3,430.89 and 2,176.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.93 : 3,430.89 = 2,176.09 : x
2. Step 2: Convert to fraction form
   2,290.93/3,430.89 = 2,176.09/x
3. Step 3: Cross multiply
   2,290.93x = 3,430.89 × 2,176.09
4. Step 4: Simplify right side
   2,290.93x = 7,465,925.42
5. Step 5: Solve for x
   x = 7,465,925.42/2,290.93
6. Step 6: Final answer
   x = 3,258.91