Finding the Fourth Proportional to 1,069,399.58, 1,604,100.58 and 321,445.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069,399.58 : 1,604,100.58 = 321,445.58 : x
2. Step 2: Convert to fraction form
   1,069,399.58/1,604,100.58 = 321,445.58/x
3. Step 3: Cross multiply
   1,069,399.58x = 1,604,100.58 × 321,445.58
4. Step 4: Simplify right side
   1,069,399.58x = 515,631,032,492.32
5. Step 5: Solve for x
   x = 515,631,032,492.32/1,069,399.58
6. Step 6: Final answer
   x = 482,168.73