Finding the Fourth Proportional to 1,404.19, 2,101.15 and 1,211.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.19 : 2,101.15 = 1,211.46 : x
2. Step 2: Convert to fraction form
   1,404.19/2,101.15 = 1,211.46/x
3. Step 3: Cross multiply
   1,404.19x = 2,101.15 × 1,211.46
4. Step 4: Simplify right side
   1,404.19x = 2,545,459.18
5. Step 5: Solve for x
   x = 2,545,459.18/1,404.19
6. Step 6: Final answer
   x = 1,812.76