Finding the Fourth Proportional to 2,105,012.88, 3,157,908.72 and 666,058.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,012.88 : 3,157,908.72 = 666,058.44 : x
2. Step 2: Convert to fraction form
   2,105,012.88/3,157,908.72 = 666,058.44/x
3. Step 3: Cross multiply
   2,105,012.88x = 3,157,908.72 × 666,058.44
4. Step 4: Simplify right side
   2,105,012.88x = 2,103,351,755,705.60
5. Step 5: Solve for x
   x = 2,103,351,755,705.60/2,105,012.88
6. Step 6: Final answer
   x = 999,210.87