Finding the Fourth Proportional to 1,931.98, 2,897.78 and 958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.98 : 2,897.78 = 958.72 : x
2. Step 2: Convert to fraction form
   1,931.98/2,897.78 = 958.72/x
3. Step 3: Cross multiply
   1,931.98x = 2,897.78 × 958.72
4. Step 4: Simplify right side
   1,931.98x = 2,778,159.64
5. Step 5: Solve for x
   x = 2,778,159.64/1,931.98
6. Step 6: Final answer
   x = 1,437.99