Finding the Fourth Proportional to 1,899.84, 2,621.20 and 1,154.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.84 : 2,621.20 = 1,154.24 : x
2. Step 2: Convert to fraction form
   1,899.84/2,621.20 = 1,154.24/x
3. Step 3: Cross multiply
   1,899.84x = 2,621.20 × 1,154.24
4. Step 4: Simplify right side
   1,899.84x = 3,025,493.89
5. Step 5: Solve for x
   x = 3,025,493.89/1,899.84
6. Step 6: Final answer
   x = 1,592.50