Finding the Fourth Proportional to 2,099.55, 2,899.31 and 1,354.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.55 : 2,899.31 = 1,354.80 : x
2. Step 2: Convert to fraction form
   2,099.55/2,899.31 = 1,354.80/x
3. Step 3: Cross multiply
   2,099.55x = 2,899.31 × 1,354.80
4. Step 4: Simplify right side
   2,099.55x = 3,927,985.19
5. Step 5: Solve for x
   x = 3,927,985.19/2,099.55
6. Step 6: Final answer
   x = 1,870.87