Finding the Fourth Proportional to 1,899.42, 2,621.34 and 1,153.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.42 : 2,621.34 = 1,153.59 : x
2. Step 2: Convert to fraction form
   1,899.42/2,621.34 = 1,153.59/x
3. Step 3: Cross multiply
   1,899.42x = 2,621.34 × 1,153.59
4. Step 4: Simplify right side
   1,899.42x = 3,023,951.61
5. Step 5: Solve for x
   x = 3,023,951.61/1,899.42
6. Step 6: Final answer
   x = 1,592.04