Finding the Fourth Proportional to 1,870.76, 2,805.21 and 1,091.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.76 : 2,805.21 = 1,091.04 : x
2. Step 2: Convert to fraction form
   1,870.76/2,805.21 = 1,091.04/x
3. Step 3: Cross multiply
   1,870.76x = 2,805.21 × 1,091.04
4. Step 4: Simplify right side
   1,870.76x = 3,060,596.32
5. Step 5: Solve for x
   x = 3,060,596.32/1,870.76
6. Step 6: Final answer
   x = 1,636.02