Finding the Fourth Proportional to 2,159.86, 2,979.54 and 1,374.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.86 : 2,979.54 = 1,374.16 : x
2. Step 2: Convert to fraction form
   2,159.86/2,979.54 = 1,374.16/x
3. Step 3: Cross multiply
   2,159.86x = 2,979.54 × 1,374.16
4. Step 4: Simplify right side
   2,159.86x = 4,094,364.69
5. Step 5: Solve for x
   x = 4,094,364.69/2,159.86
6. Step 6: Final answer
   x = 1,895.66