Finding the Fourth Proportional to 1,259.34, 1,888.56 and 437.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259.34 : 1,888.56 = 437.55 : x
2. Step 2: Convert to fraction form
   1,259.34/1,888.56 = 437.55/x
3. Step 3: Cross multiply
   1,259.34x = 1,888.56 × 437.55
4. Step 4: Simplify right side
   1,259.34x = 826,339.43
5. Step 5: Solve for x
   x = 826,339.43/1,259.34
6. Step 6: Final answer
   x = 656.17