Finding the Fourth Proportional to 1,047.64, 1,445.82 and 581.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.64 : 1,445.82 = 581.86 : x
2. Step 2: Convert to fraction form
   1,047.64/1,445.82 = 581.86/x
3. Step 3: Cross multiply
   1,047.64x = 1,445.82 × 581.86
4. Step 4: Simplify right side
   1,047.64x = 841,264.83
5. Step 5: Solve for x
   x = 841,264.83/1,047.64
6. Step 6: Final answer
   x = 803.01