Finding the Fourth Proportional to 1,613.76, 2,421.37 and 956.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.76 : 2,421.37 = 956.93 : x
2. Step 2: Convert to fraction form
   1,613.76/2,421.37 = 956.93/x
3. Step 3: Cross multiply
   1,613.76x = 2,421.37 × 956.93
4. Step 4: Simplify right side
   1,613.76x = 2,317,081.59
5. Step 5: Solve for x
   x = 2,317,081.59/1,613.76
6. Step 6: Final answer
   x = 1,435.83