Finding the Fourth Proportional to 1,588.30, 2,191.68 and 880.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.30 : 2,191.68 = 880.07 : x
2. Step 2: Convert to fraction form
   1,588.30/2,191.68 = 880.07/x
3. Step 3: Cross multiply
   1,588.30x = 2,191.68 × 880.07
4. Step 4: Simplify right side
   1,588.30x = 1,928,820.86
5. Step 5: Solve for x
   x = 1,928,820.86/1,588.30
6. Step 6: Final answer
   x = 1,214.40