Finding the Fourth Proportional to 1,404.59, 2,105.52 and 526.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.59 : 2,105.52 = 526.86 : x
2. Step 2: Convert to fraction form
   1,404.59/2,105.52 = 526.86/x
3. Step 3: Cross multiply
   1,404.59x = 2,105.52 × 526.86
4. Step 4: Simplify right side
   1,404.59x = 1,109,314.27
5. Step 5: Solve for x
   x = 1,109,314.27/1,404.59
6. Step 6: Final answer
   x = 789.78