Finding the Fourth Proportional to 2,101.34, 2,899.24 and 1,355.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.34 : 2,899.24 = 1,355.74 : x
2. Step 2: Convert to fraction form
   2,101.34/2,899.24 = 1,355.74/x
3. Step 3: Cross multiply
   2,101.34x = 2,899.24 × 1,355.74
4. Step 4: Simplify right side
   2,101.34x = 3,930,612.63
5. Step 5: Solve for x
   x = 3,930,612.63/2,101.34
6. Step 6: Final answer
   x = 1,870.52