Finding the Fourth Proportional to 1,718.39, 2,376.03 and 1,690.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,718.39 : 2,376.03 = 1,690.59 : x
2. Step 2: Convert to fraction form
   1,718.39/2,376.03 = 1,690.59/x
3. Step 3: Cross multiply
   1,718.39x = 2,376.03 × 1,690.59
4. Step 4: Simplify right side
   1,718.39x = 4,016,892.56
5. Step 5: Solve for x
   x = 4,016,892.56/1,718.39
6. Step 6: Final answer
   x = 2,337.59