Finding the Fourth Proportional to 1,711.46, 2,360.72 and 1,187.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,711.46 : 2,360.72 = 1,187.39 : x
2. Step 2: Convert to fraction form
   1,711.46/2,360.72 = 1,187.39/x
3. Step 3: Cross multiply
   1,711.46x = 2,360.72 × 1,187.39
4. Step 4: Simplify right side
   1,711.46x = 2,803,095.32
5. Step 5: Solve for x
   x = 2,803,095.32/1,711.46
6. Step 6: Final answer
   x = 1,637.84