Finding the Fourth Proportional to 1,290.72, 1,933.48 and 596.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290.72 : 1,933.48 = 596.42 : x
2. Step 2: Convert to fraction form
   1,290.72/1,933.48 = 596.42/x
3. Step 3: Cross multiply
   1,290.72x = 1,933.48 × 596.42
4. Step 4: Simplify right side
   1,290.72x = 1,153,166.14
5. Step 5: Solve for x
   x = 1,153,166.14/1,290.72
6. Step 6: Final answer
   x = 893.43