Finding the Fourth Proportional to 583,981, 805,894.50 and 315,709

Step by Step Solution

1. Step 1: Write the proportion equation
   583,981 : 805,894.50 = 315,709 : x
2. Step 2: Convert to fraction form
   583,981/805,894.50 = 315,709/x
3. Step 3: Cross multiply
   583,981x = 805,894.50 × 315,709
4. Step 4: Simplify right side
   583,981x = 254,428,146,700.50
5. Step 5: Solve for x
   x = 254,428,146,700.50/583,981
6. Step 6: Final answer
   x = 435,678.81