Finding the Fourth Proportional to 1,899.72, 2,621.57 and 1,103.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.72 : 2,621.57 = 1,103.00 : x
2. Step 2: Convert to fraction form
   1,899.72/2,621.57 = 1,103.00/x
3. Step 3: Cross multiply
   1,899.72x = 2,621.57 × 1,103.00
4. Step 4: Simplify right side
   1,899.72x = 2,891,573.09
5. Step 5: Solve for x
   x = 2,891,573.09/1,899.72
6. Step 6: Final answer
   x = 1,522.11