Finding the Fourth Proportional to 1,437.72, 2,156.78 and 707.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.72 : 2,156.78 = 707.33 : x
2. Step 2: Convert to fraction form
   1,437.72/2,156.78 = 707.33/x
3. Step 3: Cross multiply
   1,437.72x = 2,156.78 × 707.33
4. Step 4: Simplify right side
   1,437.72x = 1,525,540.88
5. Step 5: Solve for x
   x = 1,525,540.88/1,437.72
6. Step 6: Final answer
   x = 1,061.08