Finding the Fourth Proportional to 979,061.78, 1,468,605.63 and 380,057.06

Step by Step Solution

1. Step 1: Write the proportion equation
   979,061.78 : 1,468,605.63 = 380,057.06 : x
2. Step 2: Convert to fraction form
   979,061.78/1,468,605.63 = 380,057.06/x
3. Step 3: Cross multiply
   979,061.78x = 1,468,605.63 × 380,057.06
4. Step 4: Simplify right side
   979,061.78x = 558,153,938,037.25
5. Step 5: Solve for x
   x = 558,153,938,037.25/979,061.78
6. Step 6: Final answer
   x = 570,090.62