Finding the Fourth Proportional to 1,521.82, 2,099.97 and 849.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.82 : 2,099.97 = 849.60 : x
2. Step 2: Convert to fraction form
   1,521.82/2,099.97 = 849.60/x
3. Step 3: Cross multiply
   1,521.82x = 2,099.97 × 849.60
4. Step 4: Simplify right side
   1,521.82x = 1,784,134.51
5. Step 5: Solve for x
   x = 1,784,134.51/1,521.82
6. Step 6: Final answer
   x = 1,172.37