Finding the Fourth Proportional to 1,061.26, 1,591.71 and 291.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.26 : 1,591.71 = 291.76 : x
2. Step 2: Convert to fraction form
   1,061.26/1,591.71 = 291.76/x
3. Step 3: Cross multiply
   1,061.26x = 1,591.71 × 291.76
4. Step 4: Simplify right side
   1,061.26x = 464,397.31
5. Step 5: Solve for x
   x = 464,397.31/1,061.26
6. Step 6: Final answer
   x = 437.59