Finding the Fourth Proportional to 1,620.06, 2,236.49 and 1,098.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.06 : 2,236.49 = 1,098.82 : x
2. Step 2: Convert to fraction form
   1,620.06/2,236.49 = 1,098.82/x
3. Step 3: Cross multiply
   1,620.06x = 2,236.49 × 1,098.82
4. Step 4: Simplify right side
   1,620.06x = 2,457,499.94
5. Step 5: Solve for x
   x = 2,457,499.94/1,620.06
6. Step 6: Final answer
   x = 1,516.92