Finding the Fourth Proportional to 1,376.19, 1,899.50 and 851.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.19 : 1,899.50 = 851.94 : x
2. Step 2: Convert to fraction form
   1,376.19/1,899.50 = 851.94/x
3. Step 3: Cross multiply
   1,376.19x = 1,899.50 × 851.94
4. Step 4: Simplify right side
   1,376.19x = 1,618,255.77
5. Step 5: Solve for x
   x = 1,618,255.77/1,376.19
6. Step 6: Final answer
   x = 1,175.90