Finding the Fourth Proportional to 1,245.89, 1,718.35 and 1,162.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,245.89 : 1,718.35 = 1,162.06 : x
2. Step 2: Convert to fraction form
   1,245.89/1,718.35 = 1,162.06/x
3. Step 3: Cross multiply
   1,245.89x = 1,718.35 × 1,162.06
4. Step 4: Simplify right side
   1,245.89x = 1,996,818.60
5. Step 5: Solve for x
   x = 1,996,818.60/1,245.89
6. Step 6: Final answer
   x = 1,602.72