Finding the Fourth Proportional to 1,382.61, 2,073.55 and 943.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.61 : 2,073.55 = 943.78 : x
2. Step 2: Convert to fraction form
   1,382.61/2,073.55 = 943.78/x
3. Step 3: Cross multiply
   1,382.61x = 2,073.55 × 943.78
4. Step 4: Simplify right side
   1,382.61x = 1,956,980.03
5. Step 5: Solve for x
   x = 1,956,980.03/1,382.61
6. Step 6: Final answer
   x = 1,415.42