Finding the Fourth Proportional to 3,848,978.16, 5,774,749.47 and 1,290,446.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,848,978.16 : 5,774,749.47 = 1,290,446.28 : x
2. Step 2: Convert to fraction form
   3,848,978.16/5,774,749.47 = 1,290,446.28/x
3. Step 3: Cross multiply
   3,848,978.16x = 5,774,749.47 × 1,290,446.28
4. Step 4: Simplify right side
   3,848,978.16x = 7,452,003,971,493.47
5. Step 5: Solve for x
   x = 7,452,003,971,493.47/3,848,978.16
6. Step 6: Final answer
   x = 1,936,099.31