Finding the Fourth Proportional to 1,445,638.82, 2,168,564.76 and 380,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445,638.82 : 2,168,564.76 = 380,673.50 : x
2. Step 2: Convert to fraction form
   1,445,638.82/2,168,564.76 = 380,673.50/x
3. Step 3: Cross multiply
   1,445,638.82x = 2,168,564.76 × 380,673.50
4. Step 4: Simplify right side
   1,445,638.82x = 825,515,137,165.86
5. Step 5: Solve for x
   x = 825,515,137,165.86/1,445,638.82
6. Step 6: Final answer
   x = 571,038.30