Finding the Fourth Proportional to 1,409.94, 2,116.15 and 670.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.94 : 2,116.15 = 670.46 : x
2. Step 2: Convert to fraction form
   1,409.94/2,116.15 = 670.46/x
3. Step 3: Cross multiply
   1,409.94x = 2,116.15 × 670.46
4. Step 4: Simplify right side
   1,409.94x = 1,418,781.67
5. Step 5: Solve for x
   x = 1,418,781.67/1,409.94
6. Step 6: Final answer
   x = 1,006.27