Finding the Fourth Proportional to 2,101.55, 2,900.12 and 1,157.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.55 : 2,900.12 = 1,157.34 : x
2. Step 2: Convert to fraction form
   2,101.55/2,900.12 = 1,157.34/x
3. Step 3: Cross multiply
   2,101.55x = 2,900.12 × 1,157.34
4. Step 4: Simplify right side
   2,101.55x = 3,356,426.34
5. Step 5: Solve for x
   x = 3,356,426.34/2,101.55
6. Step 6: Final answer
   x = 1,597.12