Finding the Fourth Proportional to 1,521.42, 2,284.83 and 1,131.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.42 : 2,284.83 = 1,131.54 : x
2. Step 2: Convert to fraction form
   1,521.42/2,284.83 = 1,131.54/x
3. Step 3: Cross multiply
   1,521.42x = 2,284.83 × 1,131.54
4. Step 4: Simplify right side
   1,521.42x = 2,585,376.54
5. Step 5: Solve for x
   x = 2,585,376.54/1,521.42
6. Step 6: Final answer
   x = 1,699.32