Finding the Fourth Proportional to 1,359.17, 1,870.89 and 1,184.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.17 : 1,870.89 = 1,184.21 : x
2. Step 2: Convert to fraction form
   1,359.17/1,870.89 = 1,184.21/x
3. Step 3: Cross multiply
   1,359.17x = 1,870.89 × 1,184.21
4. Step 4: Simplify right side
   1,359.17x = 2,215,526.65
5. Step 5: Solve for x
   x = 2,215,526.65/1,359.17
6. Step 6: Final answer
   x = 1,630.06