Finding the Fourth Proportional to 1,613.15, 2,232.18 and 1,376.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.15 : 2,232.18 = 1,376.72 : x
2. Step 2: Convert to fraction form
   1,613.15/2,232.18 = 1,376.72/x
3. Step 3: Cross multiply
   1,613.15x = 2,232.18 × 1,376.72
4. Step 4: Simplify right side
   1,613.15x = 3,073,075.69
5. Step 5: Solve for x
   x = 3,073,075.69/1,613.15
6. Step 6: Final answer
   x = 1,905.02