Finding the Fourth Proportional to 1,182,643.98, 1,771,389.42 and 777,378.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182,643.98 : 1,771,389.42 = 777,378.72 : x
2. Step 2: Convert to fraction form
   1,182,643.98/1,771,389.42 = 777,378.72/x
3. Step 3: Cross multiply
   1,182,643.98x = 1,771,389.42 × 777,378.72
4. Step 4: Simplify right side
   1,182,643.98x = 1,377,040,439,941.14
5. Step 5: Solve for x
   x = 1,377,040,439,941.14/1,182,643.98
6. Step 6: Final answer
   x = 1,164,374.46