Finding the Fourth Proportional to 787,738, 1,087,072.72 and 448,224.88

Step by Step Solution

1. Step 1: Write the proportion equation
   787,738 : 1,087,072.72 = 448,224.88 : x
2. Step 2: Convert to fraction form
   787,738/1,087,072.72 = 448,224.88/x
3. Step 3: Cross multiply
   787,738x = 1,087,072.72 × 448,224.88
4. Step 4: Simplify right side
   787,738x = 487,253,039,473.27
5. Step 5: Solve for x
   x = 487,253,039,473.27/787,738
6. Step 6: Final answer
   x = 618,547.08