Finding the Fourth Proportional to 1,373.65, 1,894.72 and 876.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.65 : 1,894.72 = 876.91 : x
2. Step 2: Convert to fraction form
   1,373.65/1,894.72 = 876.91/x
3. Step 3: Cross multiply
   1,373.65x = 1,894.72 × 876.91
4. Step 4: Simplify right side
   1,373.65x = 1,661,498.92
5. Step 5: Solve for x
   x = 1,661,498.92/1,373.65
6. Step 6: Final answer
   x = 1,209.55