Finding the Fourth Proportional to 1,375.60, 1,898.33 and 816.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.60 : 1,898.33 = 816.34 : x
2. Step 2: Convert to fraction form
   1,375.60/1,898.33 = 816.34/x
3. Step 3: Cross multiply
   1,375.60x = 1,898.33 × 816.34
4. Step 4: Simplify right side
   1,375.60x = 1,549,682.71
5. Step 5: Solve for x
   x = 1,549,682.71/1,375.60
6. Step 6: Final answer
   x = 1,126.55