Finding the Fourth Proportional to 1,131,277.98, 1,561,071.28 and 666,058.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,277.98 : 1,561,071.28 = 666,058.43 : x
2. Step 2: Convert to fraction form
   1,131,277.98/1,561,071.28 = 666,058.43/x
3. Step 3: Cross multiply
   1,131,277.98x = 1,561,071.28 × 666,058.43
4. Step 4: Simplify right side
   1,131,277.98x = 1,039,764,685,874.89
5. Step 5: Solve for x
   x = 1,039,764,685,874.89/1,131,277.98
6. Step 6: Final answer
   x = 919,106.27