Finding the Fourth Proportional to 1,436.62, 2,156.76 and 744.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.62 : 2,156.76 = 744.70 : x
2. Step 2: Convert to fraction form
   1,436.62/2,156.76 = 744.70/x
3. Step 3: Cross multiply
   1,436.62x = 2,156.76 × 744.70
4. Step 4: Simplify right side
   1,436.62x = 1,606,139.17
5. Step 5: Solve for x
   x = 1,606,139.17/1,436.62
6. Step 6: Final answer
   x = 1,118.00