Finding the Fourth Proportional to 1,561.34, 2,343.83 and 1,015.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561.34 : 2,343.83 = 1,015.80 : x
2. Step 2: Convert to fraction form
   1,561.34/2,343.83 = 1,015.80/x
3. Step 3: Cross multiply
   1,561.34x = 2,343.83 × 1,015.80
4. Step 4: Simplify right side
   1,561.34x = 2,380,857.44
5. Step 5: Solve for x
   x = 2,380,857.44/1,561.34
6. Step 6: Final answer
   x = 1,524.89