Finding the Fourth Proportional to 1,663.71, 2,306.69 and 1,602.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.71 : 2,306.69 = 1,602.15 : x
2. Step 2: Convert to fraction form
   1,663.71/2,306.69 = 1,602.15/x
3. Step 3: Cross multiply
   1,663.71x = 2,306.69 × 1,602.15
4. Step 4: Simplify right side
   1,663.71x = 3,695,655.37
5. Step 5: Solve for x
   x = 3,695,655.37/1,663.71
6. Step 6: Final answer
   x = 2,221.33