Finding the Fourth Proportional to 802,314.40, 1,107,048.72 and 515,768.80

Step by Step Solution

1. Step 1: Write the proportion equation
   802,314.40 : 1,107,048.72 = 515,768.80 : x
2. Step 2: Convert to fraction form
   802,314.40/1,107,048.72 = 515,768.80/x
3. Step 3: Cross multiply
   802,314.40x = 1,107,048.72 × 515,768.80
4. Step 4: Simplify right side
   802,314.40x = 570,981,189,855.94
5. Step 5: Solve for x
   x = 570,981,189,855.94/802,314.40
6. Step 6: Final answer
   x = 711,667.63