Finding the Fourth Proportional to 1,288.46, 1,931.13 and 594.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.46 : 1,931.13 = 594.18 : x
2. Step 2: Convert to fraction form
   1,288.46/1,931.13 = 594.18/x
3. Step 3: Cross multiply
   1,288.46x = 1,931.13 × 594.18
4. Step 4: Simplify right side
   1,288.46x = 1,147,438.82
5. Step 5: Solve for x
   x = 1,147,438.82/1,288.46
6. Step 6: Final answer
   x = 890.55