Finding the Fourth Proportional to 544,988.16, 816,300.72 and 263,916

Step by Step Solution

1. Step 1: Write the proportion equation
   544,988.16 : 816,300.72 = 263,916 : x
2. Step 2: Convert to fraction form
   544,988.16/816,300.72 = 263,916/x
3. Step 3: Cross multiply
   544,988.16x = 816,300.72 × 263,916
4. Step 4: Simplify right side
   544,988.16x = 215,434,820,819.52
5. Step 5: Solve for x
   x = 215,434,820,819.52/544,988.16
6. Step 6: Final answer
   x = 395,301.84