Finding the Fourth Proportional to 1,931.58, 2,665.61 and 1,047.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.58 : 2,665.61 = 1,047.39 : x
2. Step 2: Convert to fraction form
   1,931.58/2,665.61 = 1,047.39/x
3. Step 3: Cross multiply
   1,931.58x = 2,665.61 × 1,047.39
4. Step 4: Simplify right side
   1,931.58x = 2,791,928.02
5. Step 5: Solve for x
   x = 2,791,928.02/1,931.58
6. Step 6: Final answer
   x = 1,445.41