Finding the Fourth Proportional to 1,588.26, 2,191.72 and 880.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.26 : 2,191.72 = 880.05 : x
2. Step 2: Convert to fraction form
   1,588.26/2,191.72 = 880.05/x
3. Step 3: Cross multiply
   1,588.26x = 2,191.72 × 880.05
4. Step 4: Simplify right side
   1,588.26x = 1,928,823.19
5. Step 5: Solve for x
   x = 1,928,823.19/1,588.26
6. Step 6: Final answer
   x = 1,214.43