Finding the Fourth Proportional to 3,931.62, 5,898.59 and 1,590.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.62 : 5,898.59 = 1,590.42 : x
2. Step 2: Convert to fraction form
   3,931.62/5,898.59 = 1,590.42/x
3. Step 3: Cross multiply
   3,931.62x = 5,898.59 × 1,590.42
4. Step 4: Simplify right side
   3,931.62x = 9,381,227.56
5. Step 5: Solve for x
   x = 9,381,227.56/3,931.62
6. Step 6: Final answer
   x = 2,386.10