Finding the Fourth Proportional to 1,946.88, 2,686.50 and 1,160.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,946.88 : 2,686.50 = 1,160.91 : x
2. Step 2: Convert to fraction form
   1,946.88/2,686.50 = 1,160.91/x
3. Step 3: Cross multiply
   1,946.88x = 2,686.50 × 1,160.91
4. Step 4: Simplify right side
   1,946.88x = 3,118,784.72
5. Step 5: Solve for x
   x = 3,118,784.72/1,946.88
6. Step 6: Final answer
   x = 1,601.94