Finding the Fourth Proportional to 1,854.51, 2,781.81 and 880.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,854.51 : 2,781.81 = 880.71 : x
2. Step 2: Convert to fraction form
   1,854.51/2,781.81 = 880.71/x
3. Step 3: Cross multiply
   1,854.51x = 2,781.81 × 880.71
4. Step 4: Simplify right side
   1,854.51x = 2,449,967.89
5. Step 5: Solve for x
   x = 2,449,967.89/1,854.51
6. Step 6: Final answer
   x = 1,321.09