Finding the Fourth Proportional to 901,992, 1,244,788.56 and 499,584

Step by Step Solution

1. Step 1: Write the proportion equation
   901,992 : 1,244,788.56 = 499,584 : x
2. Step 2: Convert to fraction form
   901,992/1,244,788.56 = 499,584/x
3. Step 3: Cross multiply
   901,992x = 1,244,788.56 × 499,584
4. Step 4: Simplify right side
   901,992x = 621,876,447,959.04
5. Step 5: Solve for x
   x = 621,876,447,959.04/901,992
6. Step 6: Final answer
   x = 689,447.85