Finding the Fourth Proportional to 2,845.81, 4,270.29 and 1,091.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,845.81 : 4,270.29 = 1,091.98 : x
2. Step 2: Convert to fraction form
   2,845.81/4,270.29 = 1,091.98/x
3. Step 3: Cross multiply
   2,845.81x = 4,270.29 × 1,091.98
4. Step 4: Simplify right side
   2,845.81x = 4,663,071.27
5. Step 5: Solve for x
   x = 4,663,071.27/2,845.81
6. Step 6: Final answer
   x = 1,638.57