Finding the Fourth Proportional to 1,437.21, 2,156.76 and 1,061.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.21 : 2,156.76 = 1,061.91 : x
2. Step 2: Convert to fraction form
   1,437.21/2,156.76 = 1,061.91/x
3. Step 3: Cross multiply
   1,437.21x = 2,156.76 × 1,061.91
4. Step 4: Simplify right side
   1,437.21x = 2,290,285.01
5. Step 5: Solve for x
   x = 2,290,285.01/1,437.21
6. Step 6: Final answer
   x = 1,593.56