Finding the Fourth Proportional to 1,409.67, 1,942.99 and 1,292.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.67 : 1,942.99 = 1,292.00 : x
2. Step 2: Convert to fraction form
   1,409.67/1,942.99 = 1,292.00/x
3. Step 3: Cross multiply
   1,409.67x = 1,942.99 × 1,292.00
4. Step 4: Simplify right side
   1,409.67x = 2,510,330.14
5. Step 5: Solve for x
   x = 2,510,330.14/1,409.67
6. Step 6: Final answer
   x = 1,780.79