Finding the Fourth Proportional to 1,920.84, 2,650.82 and 1,135.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.84 : 2,650.82 = 1,135.40 : x
2. Step 2: Convert to fraction form
   1,920.84/2,650.82 = 1,135.40/x
3. Step 3: Cross multiply
   1,920.84x = 2,650.82 × 1,135.40
4. Step 4: Simplify right side
   1,920.84x = 3,009,741.03
5. Step 5: Solve for x
   x = 3,009,741.03/1,920.84
6. Step 6: Final answer
   x = 1,566.89