Finding the Fourth Proportional to 1,521.89, 2,099.52 and 955.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.89 : 2,099.52 = 955.11 : x
2. Step 2: Convert to fraction form
   1,521.89/2,099.52 = 955.11/x
3. Step 3: Cross multiply
   1,521.89x = 2,099.52 × 955.11
4. Step 4: Simplify right side
   1,521.89x = 2,005,272.55
5. Step 5: Solve for x
   x = 2,005,272.55/1,521.89
6. Step 6: Final answer
   x = 1,317.62