Finding the Fourth Proportional to 1,288.43, 1,931.76 and 594.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.43 : 1,931.76 = 594.71 : x
2. Step 2: Convert to fraction form
   1,288.43/1,931.76 = 594.71/x
3. Step 3: Cross multiply
   1,288.43x = 1,931.76 × 594.71
4. Step 4: Simplify right side
   1,288.43x = 1,148,835.41
5. Step 5: Solve for x
   x = 1,148,835.41/1,288.43
6. Step 6: Final answer
   x = 891.66