Finding the Fourth Proportional to 1,407.61, 1,943.04 and 1,259.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.61 : 1,943.04 = 1,259.98 : x
2. Step 2: Convert to fraction form
   1,407.61/1,943.04 = 1,259.98/x
3. Step 3: Cross multiply
   1,407.61x = 1,943.04 × 1,259.98
4. Step 4: Simplify right side
   1,407.61x = 2,448,191.54
5. Step 5: Solve for x
   x = 2,448,191.54/1,407.61
6. Step 6: Final answer
   x = 1,739.25