Finding the Fourth Proportional to 2,151.63, 3,227.34 and 690.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.63 : 3,227.34 = 690.59 : x
2. Step 2: Convert to fraction form
   2,151.63/3,227.34 = 690.59/x
3. Step 3: Cross multiply
   2,151.63x = 3,227.34 × 690.59
4. Step 4: Simplify right side
   2,151.63x = 2,228,779.39
5. Step 5: Solve for x
   x = 2,228,779.39/2,151.63
6. Step 6: Final answer
   x = 1,035.86