Finding the Fourth Proportional to 1,535.34, 2,301.78 and 885.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.34 : 2,301.78 = 885.30 : x
2. Step 2: Convert to fraction form
   1,535.34/2,301.78 = 885.30/x
3. Step 3: Cross multiply
   1,535.34x = 2,301.78 × 885.30
4. Step 4: Simplify right side
   1,535.34x = 2,037,765.83
5. Step 5: Solve for x
   x = 2,037,765.83/1,535.34
6. Step 6: Final answer
   x = 1,327.24