Finding the Fourth Proportional to 945,128.16, 1,417,265.78 and 271,054.71

Step by Step Solution

1. Step 1: Write the proportion equation
   945,128.16 : 1,417,265.78 = 271,054.71 : x
2. Step 2: Convert to fraction form
   945,128.16/1,417,265.78 = 271,054.71/x
3. Step 3: Cross multiply
   945,128.16x = 1,417,265.78 × 271,054.71
4. Step 4: Simplify right side
   945,128.16x = 384,156,563,635.55
5. Step 5: Solve for x
   x = 384,156,563,635.55/945,128.16
6. Step 6: Final answer
   x = 406,459.76