Finding the Fourth Proportional to 662,196.21, 913,803.86 and 375,710.15

Step by Step Solution

1. Step 1: Write the proportion equation
   662,196.21 : 913,803.86 = 375,710.15 : x
2. Step 2: Convert to fraction form
   662,196.21/913,803.86 = 375,710.15/x
3. Step 3: Cross multiply
   662,196.21x = 913,803.86 × 375,710.15
4. Step 4: Simplify right side
   662,196.21x = 343,325,380,742.16
5. Step 5: Solve for x
   x = 343,325,380,742.16/662,196.21
6. Step 6: Final answer
   x = 518,464.73