Finding the Fourth Proportional to 1,871.58, 2,807.39 and 894.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.58 : 2,807.39 = 894.72 : x
2. Step 2: Convert to fraction form
   1,871.58/2,807.39 = 894.72/x
3. Step 3: Cross multiply
   1,871.58x = 2,807.39 × 894.72
4. Step 4: Simplify right side
   1,871.58x = 2,511,823.51
5. Step 5: Solve for x
   x = 2,511,823.51/1,871.58
6. Step 6: Final answer
   x = 1,342.09