Finding the Fourth Proportional to 739,048.64, 1,019,886.72 and 399,517.52

Step by Step Solution

1. Step 1: Write the proportion equation
   739,048.64 : 1,019,886.72 = 399,517.52 : x
2. Step 2: Convert to fraction form
   739,048.64/1,019,886.72 = 399,517.52/x
3. Step 3: Cross multiply
   739,048.64x = 1,019,886.72 × 399,517.52
4. Step 4: Simplify right side
   739,048.64x = 407,462,613,055.33
5. Step 5: Solve for x
   x = 407,462,613,055.33/739,048.64
6. Step 6: Final answer
   x = 551,333.96