Finding the Fourth Proportional to 1,975.84, 2,726.70 and 1,189.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,975.84 : 2,726.70 = 1,189.72 : x
2. Step 2: Convert to fraction form
   1,975.84/2,726.70 = 1,189.72/x
3. Step 3: Cross multiply
   1,975.84x = 2,726.70 × 1,189.72
4. Step 4: Simplify right side
   1,975.84x = 3,244,009.52
5. Step 5: Solve for x
   x = 3,244,009.52/1,975.84
6. Step 6: Final answer
   x = 1,641.84