Finding the Fourth Proportional to 978,967.89, 1,351,057.12 and 543,426.23

Step by Step Solution

1. Step 1: Write the proportion equation
   978,967.89 : 1,351,057.12 = 543,426.23 : x
2. Step 2: Convert to fraction form
   978,967.89/1,351,057.12 = 543,426.23/x
3. Step 3: Cross multiply
   978,967.89x = 1,351,057.12 × 543,426.23
4. Step 4: Simplify right side
   978,967.89x = 734,199,879,255.34
5. Step 5: Solve for x
   x = 734,199,879,255.34/978,967.89
6. Step 6: Final answer
   x = 749,973.40