Finding the Fourth Proportional to 1,191,490.72, 1,786,231.54 and 517,064.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,490.72 : 1,786,231.54 = 517,064.01 : x
2. Step 2: Convert to fraction form
   1,191,490.72/1,786,231.54 = 517,064.01/x
3. Step 3: Cross multiply
   1,191,490.72x = 1,786,231.54 × 517,064.01
4. Step 4: Simplify right side
   1,191,490.72x = 923,596,042,860.88
5. Step 5: Solve for x
   x = 923,596,042,860.88/1,191,490.72
6. Step 6: Final answer
   x = 775,160.08