Finding the Fourth Proportional to 1,691.48, 2,336.61 and 1,602.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691.48 : 2,336.61 = 1,602.81 : x
2. Step 2: Convert to fraction form
   1,691.48/2,336.61 = 1,602.81/x
3. Step 3: Cross multiply
   1,691.48x = 2,336.61 × 1,602.81
4. Step 4: Simplify right side
   1,691.48x = 3,745,147.69
5. Step 5: Solve for x
   x = 3,745,147.69/1,691.48
6. Step 6: Final answer
   x = 2,214.12