Finding the Fourth Proportional to 2,602.09, 3,590.86 and 1,423.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.09 : 3,590.86 = 1,423.17 : x
2. Step 2: Convert to fraction form
   2,602.09/3,590.86 = 1,423.17/x
3. Step 3: Cross multiply
   2,602.09x = 3,590.86 × 1,423.17
4. Step 4: Simplify right side
   2,602.09x = 5,110,404.23
5. Step 5: Solve for x
   x = 5,110,404.23/2,602.09
6. Step 6: Final answer
   x = 1,963.96