Finding the Fourth Proportional to 2,855.90, 4,282.72 and 1,099.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,855.90 : 4,282.72 = 1,099.93 : x
2. Step 2: Convert to fraction form
   2,855.90/4,282.72 = 1,099.93/x
3. Step 3: Cross multiply
   2,855.90x = 4,282.72 × 1,099.93
4. Step 4: Simplify right side
   2,855.90x = 4,710,686.71
5. Step 5: Solve for x
   x = 4,710,686.71/2,855.90
6. Step 6: Final answer
   x = 1,649.46