Finding the Fourth Proportional to 1,061.31, 1,592.01 and 291.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.31 : 1,592.01 = 291.81 : x
2. Step 2: Convert to fraction form
   1,061.31/1,592.01 = 291.81/x
3. Step 3: Cross multiply
   1,061.31x = 1,592.01 × 291.81
4. Step 4: Simplify right side
   1,061.31x = 464,564.44
5. Step 5: Solve for x
   x = 464,564.44/1,061.31
6. Step 6: Final answer
   x = 437.73