Finding the Fourth Proportional to 1,208,012.48, 1,665,687.62 and 771,853.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208,012.48 : 1,665,687.62 = 771,853.61 : x
2. Step 2: Convert to fraction form
   1,208,012.48/1,665,687.62 = 771,853.61/x
3. Step 3: Cross multiply
   1,208,012.48x = 1,665,687.62 × 771,853.61
4. Step 4: Simplify right side
   1,208,012.48x = 1,285,666,997,182.83
5. Step 5: Solve for x
   x = 1,285,666,997,182.83/1,208,012.48
6. Step 6: Final answer
   x = 1,064,282.87