Finding the Fourth Proportional to 2,159.91, 2,981.16 and 1,373.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.91 : 2,981.16 = 1,373.82 : x
2. Step 2: Convert to fraction form
   2,159.91/2,981.16 = 1,373.82/x
3. Step 3: Cross multiply
   2,159.91x = 2,981.16 × 1,373.82
4. Step 4: Simplify right side
   2,159.91x = 4,095,577.23
5. Step 5: Solve for x
   x = 4,095,577.23/2,159.91
6. Step 6: Final answer
   x = 1,896.18