Finding the Fourth Proportional to 1,030,751.12, 1,546,101.18 and 399,665.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030,751.12 : 1,546,101.18 = 399,665.06 : x
2. Step 2: Convert to fraction form
   1,030,751.12/1,546,101.18 = 399,665.06/x
3. Step 3: Cross multiply
   1,030,751.12x = 1,546,101.18 × 399,665.06
4. Step 4: Simplify right side
   1,030,751.12x = 617,922,620,870.77
5. Step 5: Solve for x
   x = 617,922,620,870.77/1,030,751.12
6. Step 6: Final answer
   x = 599,487.70