Finding the Fourth Proportional to 659,300.64, 993,892.45 and 615,357.88

Step by Step Solution

1. Step 1: Write the proportion equation
   659,300.64 : 993,892.45 = 615,357.88 : x
2. Step 2: Convert to fraction form
   659,300.64/993,892.45 = 615,357.88/x
3. Step 3: Cross multiply
   659,300.64x = 993,892.45 × 615,357.88
4. Step 4: Simplify right side
   659,300.64x = 611,599,550,980.01
5. Step 5: Solve for x
   x = 611,599,550,980.01/659,300.64
6. Step 6: Final answer
   x = 927,648.96