Finding the Fourth Proportional to 1,518.89, 2,097.03 and 1,239.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.89 : 2,097.03 = 1,239.79 : x
2. Step 2: Convert to fraction form
   1,518.89/2,097.03 = 1,239.79/x
3. Step 3: Cross multiply
   1,518.89x = 2,097.03 × 1,239.79
4. Step 4: Simplify right side
   1,518.89x = 2,599,866.34
5. Step 5: Solve for x
   x = 2,599,866.34/1,518.89
6. Step 6: Final answer
   x = 1,711.69