Finding the Fourth Proportional to 1,106,978.02, 1,660,611.75 and 397,085.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,106,978.02 : 1,660,611.75 = 397,085.38 : x
2. Step 2: Convert to fraction form
   1,106,978.02/1,660,611.75 = 397,085.38/x
3. Step 3: Cross multiply
   1,106,978.02x = 1,660,611.75 × 397,085.38
4. Step 4: Simplify right side
   1,106,978.02x = 659,404,647,781.22
5. Step 5: Solve for x
   x = 659,404,647,781.22/1,106,978.02
6. Step 6: Final answer
   x = 595,679.98