Finding the Fourth Proportional to 2,601.86, 3,590.64 and 1,423.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.86 : 3,590.64 = 1,423.01 : x
2. Step 2: Convert to fraction form
   2,601.86/3,590.64 = 1,423.01/x
3. Step 3: Cross multiply
   2,601.86x = 3,590.64 × 1,423.01
4. Step 4: Simplify right side
   2,601.86x = 5,109,516.63
5. Step 5: Solve for x
   x = 5,109,516.63/2,601.86
6. Step 6: Final answer
   x = 1,963.79