Finding the Fourth Proportional to 994,012.77, 1,371,656.71 and 558,406.42

Step by Step Solution

1. Step 1: Write the proportion equation
   994,012.77 : 1,371,656.71 = 558,406.42 : x
2. Step 2: Convert to fraction form
   994,012.77/1,371,656.71 = 558,406.42/x
3. Step 3: Cross multiply
   994,012.77x = 1,371,656.71 × 558,406.42
4. Step 4: Simplify right side
   994,012.77x = 765,941,910,168.94
5. Step 5: Solve for x
   x = 765,941,910,168.94/994,012.77
6. Step 6: Final answer
   x = 770,555.40