Finding the Fourth Proportional to 752,978.29, 1,129,445.88 and 213,233.29

Step by Step Solution

1. Step 1: Write the proportion equation
   752,978.29 : 1,129,445.88 = 213,233.29 : x
2. Step 2: Convert to fraction form
   752,978.29/1,129,445.88 = 213,233.29/x
3. Step 3: Cross multiply
   752,978.29x = 1,129,445.88 × 213,233.29
4. Step 4: Simplify right side
   752,978.29x = 240,835,460,869.35
5. Step 5: Solve for x
   x = 240,835,460,869.35/752,978.29
6. Step 6: Final answer
   x = 319,843.83