Finding the Fourth Proportional to 1,376, 1,898.82 and 786.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376 : 1,898.82 = 786.50 : x
2. Step 2: Convert to fraction form
   1,376/1,898.82 = 786.50/x
3. Step 3: Cross multiply
   1,376x = 1,898.82 × 786.50
4. Step 4: Simplify right side
   1,376x = 1,493,421.93
5. Step 5: Solve for x
   x = 1,493,421.93/1,376
6. Step 6: Final answer
   x = 1,085.34