Finding the Fourth Proportional to 1,899.82, 2,621.03 and 1,153.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.82 : 2,621.03 = 1,153.50 : x
2. Step 2: Convert to fraction form
   1,899.82/2,621.03 = 1,153.50/x
3. Step 3: Cross multiply
   1,899.82x = 2,621.03 × 1,153.50
4. Step 4: Simplify right side
   1,899.82x = 3,023,358.11
5. Step 5: Solve for x
   x = 3,023,358.11/1,899.82
6. Step 6: Final answer
   x = 1,591.39