Finding the Fourth Proportional to 912,277.98, 1,258,667.28 and 636,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   912,277.98 : 1,258,667.28 = 636,628.50 : x
2. Step 2: Convert to fraction form
   912,277.98/1,258,667.28 = 636,628.50/x
3. Step 3: Cross multiply
   912,277.98x = 1,258,667.28 × 636,628.50
4. Step 4: Simplify right side
   912,277.98x = 801,303,462,465.48
5. Step 5: Solve for x
   x = 801,303,462,465.48/912,277.98
6. Step 6: Final answer
   x = 878,354.49