Finding the Fourth Proportional to 1,377.16, 1,899.76 and 1,045.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.16 : 1,899.76 = 1,045.04 : x
2. Step 2: Convert to fraction form
   1,377.16/1,899.76 = 1,045.04/x
3. Step 3: Cross multiply
   1,377.16x = 1,899.76 × 1,045.04
4. Step 4: Simplify right side
   1,377.16x = 1,985,325.19
5. Step 5: Solve for x
   x = 1,985,325.19/1,377.16
6. Step 6: Final answer
   x = 1,441.61