Finding the Fourth Proportional to 655,448.83, 983,288.50 and 271,196.57

Step by Step Solution

1. Step 1: Write the proportion equation
   655,448.83 : 983,288.50 = 271,196.57 : x
2. Step 2: Convert to fraction form
   655,448.83/983,288.50 = 271,196.57/x
3. Step 3: Cross multiply
   655,448.83x = 983,288.50 × 271,196.57
4. Step 4: Simplify right side
   655,448.83x = 266,664,470,300.68
5. Step 5: Solve for x
   x = 266,664,470,300.68/655,448.83
6. Step 6: Final answer
   x = 406,842.55