Finding the Fourth Proportional to 1,969.61, 2,719.13 and 1,307.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.61 : 2,719.13 = 1,307.34 : x
2. Step 2: Convert to fraction form
   1,969.61/2,719.13 = 1,307.34/x
3. Step 3: Cross multiply
   1,969.61x = 2,719.13 × 1,307.34
4. Step 4: Simplify right side
   1,969.61x = 3,554,820.88
5. Step 5: Solve for x
   x = 3,554,820.88/1,969.61
6. Step 6: Final answer
   x = 1,804.84