Finding the Fourth Proportional to 786,362.67, 1,178,680.59 and 448,667.09

Step by Step Solution

1. Step 1: Write the proportion equation
   786,362.67 : 1,178,680.59 = 448,667.09 : x
2. Step 2: Convert to fraction form
   786,362.67/1,178,680.59 = 448,667.09/x
3. Step 3: Cross multiply
   786,362.67x = 1,178,680.59 × 448,667.09
4. Step 4: Simplify right side
   786,362.67x = 528,835,184,461.38
5. Step 5: Solve for x
   x = 528,835,184,461.38/786,362.67
6. Step 6: Final answer
   x = 672,508.00