Finding the Fourth Proportional to 1,577.82, 2,367.72 and 1,089.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,577.82 : 2,367.72 = 1,089.96 : x
2. Step 2: Convert to fraction form
   1,577.82/2,367.72 = 1,089.96/x
3. Step 3: Cross multiply
   1,577.82x = 2,367.72 × 1,089.96
4. Step 4: Simplify right side
   1,577.82x = 2,580,720.09
5. Step 5: Solve for x
   x = 2,580,720.09/1,577.82
6. Step 6: Final answer
   x = 1,635.62