Finding the Fourth Proportional to 1,393.29, 2,091.45 and 1,047.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.29 : 2,091.45 = 1,047.62 : x
2. Step 2: Convert to fraction form
   1,393.29/2,091.45 = 1,047.62/x
3. Step 3: Cross multiply
   1,393.29x = 2,091.45 × 1,047.62
4. Step 4: Simplify right side
   1,393.29x = 2,191,034.39
5. Step 5: Solve for x
   x = 2,191,034.39/1,393.29
6. Step 6: Final answer
   x = 1,572.56