Finding the Fourth Proportional to 1,401.95, 1,933.74 and 870.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.95 : 1,933.74 = 870.51 : x
2. Step 2: Convert to fraction form
   1,401.95/1,933.74 = 870.51/x
3. Step 3: Cross multiply
   1,401.95x = 1,933.74 × 870.51
4. Step 4: Simplify right side
   1,401.95x = 1,683,340.01
5. Step 5: Solve for x
   x = 1,683,340.01/1,401.95
6. Step 6: Final answer
   x = 1,200.72