Finding the Fourth Proportional to 2,099.61, 2,893.89 and 1,435.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.61 : 2,893.89 = 1,435.31 : x
2. Step 2: Convert to fraction form
   2,099.61/2,893.89 = 1,435.31/x
3. Step 3: Cross multiply
   2,099.61x = 2,893.89 × 1,435.31
4. Step 4: Simplify right side
   2,099.61x = 4,153,631.02
5. Step 5: Solve for x
   x = 4,153,631.02/2,099.61
6. Step 6: Final answer
   x = 1,978.29