Finding the Fourth Proportional to 2,111.32, 2,910.50 and 1,355.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.32 : 2,910.50 = 1,355.02 : x
2. Step 2: Convert to fraction form
   2,111.32/2,910.50 = 1,355.02/x
3. Step 3: Cross multiply
   2,111.32x = 2,910.50 × 1,355.02
4. Step 4: Simplify right side
   2,111.32x = 3,943,785.71
5. Step 5: Solve for x
   x = 3,943,785.71/2,111.32
6. Step 6: Final answer
   x = 1,867.92