Finding the Fourth Proportional to 1,376.53, 1,898.63 and 956.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.53 : 1,898.63 = 956.99 : x
2. Step 2: Convert to fraction form
   1,376.53/1,898.63 = 956.99/x
3. Step 3: Cross multiply
   1,376.53x = 1,898.63 × 956.99
4. Step 4: Simplify right side
   1,376.53x = 1,816,969.92
5. Step 5: Solve for x
   x = 1,816,969.92/1,376.53
6. Step 6: Final answer
   x = 1,319.96