Finding the Fourth Proportional to 2,099.93, 2,894.74 and 1,312.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.93 : 2,894.74 = 1,312.61 : x
2. Step 2: Convert to fraction form
   2,099.93/2,894.74 = 1,312.61/x
3. Step 3: Cross multiply
   2,099.93x = 2,894.74 × 1,312.61
4. Step 4: Simplify right side
   2,099.93x = 3,799,646.92
5. Step 5: Solve for x
   x = 3,799,646.92/2,099.93
6. Step 6: Final answer
   x = 1,809.42