Finding the Fourth Proportional to 1,923.98, 2,875.42 and 1,405.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,923.98 : 2,875.42 = 1,405.07 : x
2. Step 2: Convert to fraction form
   1,923.98/2,875.42 = 1,405.07/x
3. Step 3: Cross multiply
   1,923.98x = 2,875.42 × 1,405.07
4. Step 4: Simplify right side
   1,923.98x = 4,040,166.38
5. Step 5: Solve for x
   x = 4,040,166.38/1,923.98
6. Step 6: Final answer
   x = 2,099.90