Finding the Fourth Proportional to 1,602.89, 2,212.99 and 1,229.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,602.89 : 2,212.99 = 1,229.15 : x
2. Step 2: Convert to fraction form
   1,602.89/2,212.99 = 1,229.15/x
3. Step 3: Cross multiply
   1,602.89x = 2,212.99 × 1,229.15
4. Step 4: Simplify right side
   1,602.89x = 2,720,096.66
5. Step 5: Solve for x
   x = 2,720,096.66/1,602.89
6. Step 6: Final answer
   x = 1,697.00