Finding the Fourth Proportional to 2,102.56, 2,901.60 and 1,158.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.56 : 2,901.60 = 1,158.32 : x
2. Step 2: Convert to fraction form
   2,102.56/2,901.60 = 1,158.32/x
3. Step 3: Cross multiply
   2,102.56x = 2,901.60 × 1,158.32
4. Step 4: Simplify right side
   2,102.56x = 3,360,981.31
5. Step 5: Solve for x
   x = 3,360,981.31/2,102.56
6. Step 6: Final answer
   x = 1,598.52