Finding the Fourth Proportional to 1,047.38, 1,445.38 and 581.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.38 : 1,445.38 = 581.63 : x
2. Step 2: Convert to fraction form
   1,047.38/1,445.38 = 581.63/x
3. Step 3: Cross multiply
   1,047.38x = 1,445.38 × 581.63
4. Step 4: Simplify right side
   1,047.38x = 840,667.69
5. Step 5: Solve for x
   x = 840,667.69/1,047.38
6. Step 6: Final answer
   x = 802.64