Finding the Fourth Proportional to 1,404,612.16, 1,925,361.68 and 1,385,711.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404,612.16 : 1,925,361.68 = 1,385,711.68 : x
2. Step 2: Convert to fraction form
   1,404,612.16/1,925,361.68 = 1,385,711.68/x
3. Step 3: Cross multiply
   1,404,612.16x = 1,925,361.68 × 1,385,711.68
4. Step 4: Simplify right side
   1,404,612.16x = 2,667,996,168,200.42
5. Step 5: Solve for x
   x = 2,667,996,168,200.42/1,404,612.16
6. Step 6: Final answer
   x = 1,899,453.99