Finding the Fourth Proportional to 1,871.41, 2,801.68 and 1,089.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,871.41 : 2,801.68 = 1,089.02 : x
2. Step 2: Convert to fraction form
   1,871.41/2,801.68 = 1,089.02/x
3. Step 3: Cross multiply
   1,871.41x = 2,801.68 × 1,089.02
4. Step 4: Simplify right side
   1,871.41x = 3,051,089.84
5. Step 5: Solve for x
   x = 3,051,089.84/1,871.41
6. Step 6: Final answer
   x = 1,630.37