Finding the Fourth Proportional to 1,145.76, 1,719.33 and 625.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.76 : 1,719.33 = 625.74 : x
2. Step 2: Convert to fraction form
   1,145.76/1,719.33 = 625.74/x
3. Step 3: Cross multiply
   1,145.76x = 1,719.33 × 625.74
4. Step 4: Simplify right side
   1,145.76x = 1,075,853.55
5. Step 5: Solve for x
   x = 1,075,853.55/1,145.76
6. Step 6: Final answer
   x = 938.99