Finding the Fourth Proportional to 1,686.42, 2,326.05 and 1,162.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.42 : 2,326.05 = 1,162.62 : x
2. Step 2: Convert to fraction form
   1,686.42/2,326.05 = 1,162.62/x
3. Step 3: Cross multiply
   1,686.42x = 2,326.05 × 1,162.62
4. Step 4: Simplify right side
   1,686.42x = 2,704,312.25
5. Step 5: Solve for x
   x = 2,704,312.25/1,686.42
6. Step 6: Final answer
   x = 1,603.58