Finding the Fourth Proportional to 713,111.49, 984,101.40 and 390,814.52

Step by Step Solution

1. Step 1: Write the proportion equation
   713,111.49 : 984,101.40 = 390,814.52 : x
2. Step 2: Convert to fraction form
   713,111.49/984,101.40 = 390,814.52/x
3. Step 3: Cross multiply
   713,111.49x = 984,101.40 × 390,814.52
4. Step 4: Simplify right side
   713,111.49x = 384,601,111,351.82
5. Step 5: Solve for x
   x = 384,601,111,351.82/713,111.49
6. Step 6: Final answer
   x = 539,328.17