Finding the Fourth Proportional to 1,054,399.82, 1,581,272.42 and 380,393.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054,399.82 : 1,581,272.42 = 380,393.28 : x
2. Step 2: Convert to fraction form
   1,054,399.82/1,581,272.42 = 380,393.28/x
3. Step 3: Cross multiply
   1,054,399.82x = 1,581,272.42 × 380,393.28
4. Step 4: Simplify right side
   1,054,399.82x = 601,505,400,515.37
5. Step 5: Solve for x
   x = 601,505,400,515.37/1,054,399.82
6. Step 6: Final answer
   x = 570,471.84