Finding the Fourth Proportional to 2,176.86, 3,004.38 and 1,431.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.86 : 3,004.38 = 1,431.93 : x
2. Step 2: Convert to fraction form
   2,176.86/3,004.38 = 1,431.93/x
3. Step 3: Cross multiply
   2,176.86x = 3,004.38 × 1,431.93
4. Step 4: Simplify right side
   2,176.86x = 4,302,061.85
5. Step 5: Solve for x
   x = 4,302,061.85/2,176.86
6. Step 6: Final answer
   x = 1,976.27