Finding the Fourth Proportional to 978,055.18, 1,348,475.86 and 698,985.88

Step by Step Solution

1. Step 1: Write the proportion equation
   978,055.18 : 1,348,475.86 = 698,985.88 : x
2. Step 2: Convert to fraction form
   978,055.18/1,348,475.86 = 698,985.88/x
3. Step 3: Cross multiply
   978,055.18x = 1,348,475.86 × 698,985.88
4. Step 4: Simplify right side
   978,055.18x = 942,565,585,660.86
5. Step 5: Solve for x
   x = 942,565,585,660.86/978,055.18
6. Step 6: Final answer
   x = 963,714.12