Finding the Fourth Proportional to 755,290.72, 1,042,326 and 415,784.80

Step by Step Solution

1. Step 1: Write the proportion equation
   755,290.72 : 1,042,326 = 415,784.80 : x
2. Step 2: Convert to fraction form
   755,290.72/1,042,326 = 415,784.80/x
3. Step 3: Cross multiply
   755,290.72x = 1,042,326 × 415,784.80
4. Step 4: Simplify right side
   755,290.72x = 433,383,307,444.80
5. Step 5: Solve for x
   x = 433,383,307,444.80/755,290.72
6. Step 6: Final answer
   x = 573,796.68