Finding the Fourth Proportional to 1,911.76, 2,638.22 and 1,165.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,911.76 : 2,638.22 = 1,165.56 : x
2. Step 2: Convert to fraction form
   1,911.76/2,638.22 = 1,165.56/x
3. Step 3: Cross multiply
   1,911.76x = 2,638.22 × 1,165.56
4. Step 4: Simplify right side
   1,911.76x = 3,075,003.70
5. Step 5: Solve for x
   x = 3,075,003.70/1,911.76
6. Step 6: Final answer
   x = 1,608.47