Finding the Fourth Proportional to 1,887.76, 2,604.86 and 1,189

Step by Step Solution

1. Step 1: Write the proportion equation
   1,887.76 : 2,604.86 = 1,189 : x
2. Step 2: Convert to fraction form
   1,887.76/2,604.86 = 1,189/x
3. Step 3: Cross multiply
   1,887.76x = 2,604.86 × 1,189
4. Step 4: Simplify right side
   1,887.76x = 3,097,178.54
5. Step 5: Solve for x
   x = 3,097,178.54/1,887.76
6. Step 6: Final answer
   x = 1,640.66