Finding the Fourth Proportional to 1,288.98, 1,930.86 and 594.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.98 : 1,930.86 = 594.68 : x
2. Step 2: Convert to fraction form
   1,288.98/1,930.86 = 594.68/x
3. Step 3: Cross multiply
   1,288.98x = 1,930.86 × 594.68
4. Step 4: Simplify right side
   1,288.98x = 1,148,243.82
5. Step 5: Solve for x
   x = 1,148,243.82/1,288.98
6. Step 6: Final answer
   x = 890.82