Finding the Fourth Proportional to 1,288.63, 1,930.35 and 594.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.63 : 1,930.35 = 594.34 : x
2. Step 2: Convert to fraction form
   1,288.63/1,930.35 = 594.34/x
3. Step 3: Cross multiply
   1,288.63x = 1,930.35 × 594.34
4. Step 4: Simplify right side
   1,288.63x = 1,147,284.22
5. Step 5: Solve for x
   x = 1,147,284.22/1,288.63
6. Step 6: Final answer
   x = 890.31