Finding the Fourth Proportional to 1,921.62, 2,651.89 and 1,175.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.62 : 2,651.89 = 1,175.99 : x
2. Step 2: Convert to fraction form
   1,921.62/2,651.89 = 1,175.99/x
3. Step 3: Cross multiply
   1,921.62x = 2,651.89 × 1,175.99
4. Step 4: Simplify right side
   1,921.62x = 3,118,604.50
5. Step 5: Solve for x
   x = 3,118,604.50/1,921.62
6. Step 6: Final answer
   x = 1,622.90