Finding the Fourth Proportional to 985,978.52, 1,479,131.20 and 346,116.26

Step by Step Solution

1. Step 1: Write the proportion equation
   985,978.52 : 1,479,131.20 = 346,116.26 : x
2. Step 2: Convert to fraction form
   985,978.52/1,479,131.20 = 346,116.26/x
3. Step 3: Cross multiply
   985,978.52x = 1,479,131.20 × 346,116.26
4. Step 4: Simplify right side
   985,978.52x = 511,951,358,993.31
5. Step 5: Solve for x
   x = 511,951,358,993.31/985,978.52
6. Step 6: Final answer
   x = 519,231.76