Finding the Fourth Proportional to 1,899.19, 2,622.17 and 1,191.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.19 : 2,622.17 = 1,191.32 : x
2. Step 2: Convert to fraction form
   1,899.19/2,622.17 = 1,191.32/x
3. Step 3: Cross multiply
   1,899.19x = 2,622.17 × 1,191.32
4. Step 4: Simplify right side
   1,899.19x = 3,123,837.61
5. Step 5: Solve for x
   x = 3,123,837.61/1,899.19
6. Step 6: Final answer
   x = 1,644.83