Finding the Fourth Proportional to 1,690.79, 2,333.57 and 1,646.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.79 : 2,333.57 = 1,646.37 : x
2. Step 2: Convert to fraction form
   1,690.79/2,333.57 = 1,646.37/x
3. Step 3: Cross multiply
   1,690.79x = 2,333.57 × 1,646.37
4. Step 4: Simplify right side
   1,690.79x = 3,841,919.64
5. Step 5: Solve for x
   x = 3,841,919.64/1,690.79
6. Step 6: Final answer
   x = 2,272.26