Finding the Fourth Proportional to 418,667.83, 577,976.12 and 283,417.27

Step by Step Solution

1. Step 1: Write the proportion equation
   418,667.83 : 577,976.12 = 283,417.27 : x
2. Step 2: Convert to fraction form
   418,667.83/577,976.12 = 283,417.27/x
3. Step 3: Cross multiply
   418,667.83x = 577,976.12 × 283,417.27
4. Step 4: Simplify right side
   418,667.83x = 163,808,414,055.59
5. Step 5: Solve for x
   x = 163,808,414,055.59/418,667.83
6. Step 6: Final answer
   x = 391,261.05