Finding the Fourth Proportional to 2,159.42, 2,977.98 and 1,718.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.42 : 2,977.98 = 1,718.78 : x
2. Step 2: Convert to fraction form
   2,159.42/2,977.98 = 1,718.78/x
3. Step 3: Cross multiply
   2,159.42x = 2,977.98 × 1,718.78
4. Step 4: Simplify right side
   2,159.42x = 5,118,492.46
5. Step 5: Solve for x
   x = 5,118,492.46/2,159.42
6. Step 6: Final answer
   x = 2,370.31