Finding the Fourth Proportional to 2,037.60, 2,811.89 and 1,153.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,037.60 : 2,811.89 = 1,153.35 : x
2. Step 2: Convert to fraction form
   2,037.60/2,811.89 = 1,153.35/x
3. Step 3: Cross multiply
   2,037.60x = 2,811.89 × 1,153.35
4. Step 4: Simplify right side
   2,037.60x = 3,243,087.56
5. Step 5: Solve for x
   x = 3,243,087.56/2,037.60
6. Step 6: Final answer
   x = 1,591.62