Finding the Fourth Proportional to 1,690.51, 2,337.33 and 1,665.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.51 : 2,337.33 = 1,665.67 : x
2. Step 2: Convert to fraction form
   1,690.51/2,337.33 = 1,665.67/x
3. Step 3: Cross multiply
   1,690.51x = 2,337.33 × 1,665.67
4. Step 4: Simplify right side
   1,690.51x = 3,893,220.46
5. Step 5: Solve for x
   x = 3,893,220.46/1,690.51
6. Step 6: Final answer
   x = 2,302.99