Finding the Fourth Proportional to 1,401.16, 2,100.70 and 707.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.16 : 2,100.70 = 707.32 : x
2. Step 2: Convert to fraction form
   1,401.16/2,100.70 = 707.32/x
3. Step 3: Cross multiply
   1,401.16x = 2,100.70 × 707.32
4. Step 4: Simplify right side
   1,401.16x = 1,485,867.12
5. Step 5: Solve for x
   x = 1,485,867.12/1,401.16
6. Step 6: Final answer
   x = 1,060.45