Finding the Fourth Proportional to 1,384,921.58, 2,077,683.69 and 438,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384,921.58 : 2,077,683.69 = 438,300.50 : x
2. Step 2: Convert to fraction form
   1,384,921.58/2,077,683.69 = 438,300.50/x
3. Step 3: Cross multiply
   1,384,921.58x = 2,077,683.69 × 438,300.50
4. Step 4: Simplify right side
   1,384,921.58x = 910,649,800,168.85
5. Step 5: Solve for x
   x = 910,649,800,168.85/1,384,921.58
6. Step 6: Final answer
   x = 657,546.11