Finding the Fourth Proportional to 813,148, 1,122,144.24 and 495,196

Step by Step Solution

1. Step 1: Write the proportion equation
   813,148 : 1,122,144.24 = 495,196 : x
2. Step 2: Convert to fraction form
   813,148/1,122,144.24 = 495,196/x
3. Step 3: Cross multiply
   813,148x = 1,122,144.24 × 495,196
4. Step 4: Simplify right side
   813,148x = 555,681,339,071.04
5. Step 5: Solve for x
   x = 555,681,339,071.04/813,148
6. Step 6: Final answer
   x = 683,370.48