Finding the Fourth Proportional to 2,026.58, 2,796.53 and 1,187.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,026.58 : 2,796.53 = 1,187.15 : x
2. Step 2: Convert to fraction form
   2,026.58/2,796.53 = 1,187.15/x
3. Step 3: Cross multiply
   2,026.58x = 2,796.53 × 1,187.15
4. Step 4: Simplify right side
   2,026.58x = 3,319,880.67
5. Step 5: Solve for x
   x = 3,319,880.67/2,026.58
6. Step 6: Final answer
   x = 1,638.17