Finding the Fourth Proportional to 1,290.63, 1,934.55 and 597.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290.63 : 1,934.55 = 597.81 : x
2. Step 2: Convert to fraction form
   1,290.63/1,934.55 = 597.81/x
3. Step 3: Cross multiply
   1,290.63x = 1,934.55 × 597.81
4. Step 4: Simplify right side
   1,290.63x = 1,156,493.34
5. Step 5: Solve for x
   x = 1,156,493.34/1,290.63
6. Step 6: Final answer
   x = 896.07