Finding the Fourth Proportional to 1,690.72, 2,336.17 and 1,301.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.72 : 2,336.17 = 1,301.11 : x
2. Step 2: Convert to fraction form
   1,690.72/2,336.17 = 1,301.11/x
3. Step 3: Cross multiply
   1,690.72x = 2,336.17 × 1,301.11
4. Step 4: Simplify right side
   1,690.72x = 3,039,599.22
5. Step 5: Solve for x
   x = 3,039,599.22/1,690.72
6. Step 6: Final answer
   x = 1,797.82