Finding the Fourth Proportional to 1,158,063.99, 1,737,327.90 and 399,933.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158,063.99 : 1,737,327.90 = 399,933.15 : x
2. Step 2: Convert to fraction form
   1,158,063.99/1,737,327.90 = 399,933.15/x
3. Step 3: Cross multiply
   1,158,063.99x = 1,737,327.90 × 399,933.15
4. Step 4: Simplify right side
   1,158,063.99x = 694,815,019,629.89
5. Step 5: Solve for x
   x = 694,815,019,629.89/1,158,063.99
6. Step 6: Final answer
   x = 599,979.82