Finding the Fourth Proportional to 882,048.34, 1,321,407.15 and 521,142.31

Step by Step Solution

1. Step 1: Write the proportion equation
   882,048.34 : 1,321,407.15 = 521,142.31 : x
2. Step 2: Convert to fraction form
   882,048.34/1,321,407.15 = 521,142.31/x
3. Step 3: Cross multiply
   882,048.34x = 1,321,407.15 × 521,142.31
4. Step 4: Simplify right side
   882,048.34x = 688,641,174,601.52
5. Step 5: Solve for x
   x = 688,641,174,601.52/882,048.34
6. Step 6: Final answer
   x = 780,729.52